Elders
The saying is trustworthy: If anyone aspires to the office of overseer, he desires a noble task. Therefore an overseer must be above reproach, the husband of one wife, sober-minded, self-controlled, respectable, hospitable, able to teach, not a drunkard, not violent but gentle, not quarrelsome, not a lover of money. He must manage his own household well, with all dignity keeping his children submissive, for if someone does not know how to manage his own household, how will he care for God's church? He must not be a recent convert, or he may become puffed up with conceit and fall into the condemnation of the devil. Moreover, he must be well thought of by outsiders, so that he may not fall into disgrace, into a snare of the devil. (1 Timothy 3:1-7)
Rev. Dr. Blake Altman
Senior Pastor
Blake leads the vision and preaching at Trinity after previously serving as a campus minister at Princeton University. He holds a ThM from Dallas Theological Seminary and earned his doctorate from Covenant Theological Seminary. Active in regional church leadership, he has served as moderator of the Hills and Plains Presbytery and as chairman of the PCA’s Mission to North America. Blake lives in Owasso with his wife and four children, and in his free time enjoys flying as an instrument-rated private pilot, reading, and the outdoors.
Rev. Mark Kuiper
Associate Pastor
Born in Australia and raised across the U.S., Mark worked in sales and marketing before earning his degree from Covenant Seminary in 1993. Over a decades-long ministry career, he has pastored and planted churches in Virginia, California, Mississippi, Missouri, and Oklahoma. He and his wife, Tammy—who actively serves alongside him—have three children and three grandchildren. Outside of ministry, Mark enjoys cycling, hiking, hunting, fishing, and playing cards with family.
Rev. Nathan Duke
Assistant Pastor & Student Ministries Director
Raised in St. Louis, Nathan moved to Oklahoma to attend The University of Tulsa, where he earned a degree in History before interning with Trinity's Youth Group in 2019. He was later named Youth Director, subsequently earning his MDiv from Covenant Theological Seminary and receiving ordination in 2025. Outside of work, Nathan is an avid Taylor Swift fan and enjoys reading in his spare time.
Dr. Paul Deslauriers
Ruling Elder
A Massachusetts native and US Navy veteran, Paul came to faith through his wife, Joann, shortly after they married in 1975. After earning his Ph.D. in chemistry and raising two daughters, Paul moved his family to Oklahoma, where he retired as a Research Fellow at Chevron Phillips while Joann retired from Oklahoma State University. Now proud grandparents of six, Paul and Joann remain active members at Trinity, where Paul continues his longtime calling in church leadership.
Nathan Keltner
Ruling Elder
Nathan Keltner is an Information Security professional, life-long Oklahoman, and Owasso transplant. Introduced to the PCA by his wife, Anna, whom he married in 2005, Nathan's faith was deepened through strong mentorship across several churches before helping found Trinity in 2012. Today, he and Anna are raising three sons, and in his free time, Nathan enjoys reading, trying his hand at sports, and spending time with his family.
John Nadig
Ruling Elder
Raised in Bucks County, Pennsylvania, Jon developed a passion for discipleship through the Navigators at Penn State, later serving as a campus minister at UT Austin where he met his wife, Courtney. They moved to Oklahoma in 2010, welcomed twins, and Jon now works in procurement for the U.S. Army Corps of Engineers. Together, their family loves visiting national parks with a goal of exploring every single one.
Chuck Simmons
Ruling Elder
Raised in Tulsa and Claremore, Chuck is a founding member of Trinity Presbyterian Church and has spent decades serving in local youth ministry and church leadership. After a long career in purchasing and inventory management with American Airlines—during which he earned an MS in Industrial Management and completed seminary coursework—he now serves as Manager of Inventory Control at Omni Air International. Chuck and his wife, Lori, have made their home in Owasso since 2007.
James Zion
Ruling Elder
Raised on a farm in Western Washington, James spent 12 years as an educational consultant—traveling to all 50 states and abroad—before restoring a 100-year-old homestead with his wife, Rebecca, to raise their four children. Deeply committed to ministry, he has served as a deacon and co-led initiatives supporting foster families and trauma-impacted youth. The family relocated to Owasso in 2022, where James now works in aerospace IT sales while enjoying outdoor adventures, music, and time with family.
Barry Blades
Ruling Elder Emeritus
A Bartlesville native and OSU graduate, Barry spent his career in management and manufacturing consulting—eventually founding his own firm, SixthSenze—before retiring. Married to his childhood sweetheart for 47 years, they have four daughters and 12 grandchildren. Barry has served as a ruling elder at Trinity since 2023, and in his free time enjoys flying as a private pilot, cycling, hiking, and water sports.
Chris Cadieux
Ruling Elder Emeritus
Chris met his wife, Keil, while performing in a college musical at the University of Oklahoma, where both earned fine arts degrees before marrying in 1982. Alongside raising two daughters and serving on various Tulsa arts and nonprofit boards, Chris built a diverse business career—spending 20 years at QuikTrip, founding a media production company, and now partnering at Leadline Marketing. Active in church leadership for decades, he was ordained as a PCA Ruling Elder in 2015. Chris and Keil enjoying spending time with their five granddaughters.
Dan Agosto
Dan moved to Owasso in 1990 with his family when he was 12. He finds the most value in being a hands-on dad to his three kids. He loves camping, sci-fi, playing guitar, mathematical physics, and hyperbole. He met his wife and probably the best person in the world in 2014 and his family grew to six kids and too many dogs. Reformed University Fellowship (RUF) introduced Dan to the PCA, which makes the most sense to Dan, a lifelong lover of Jesus. Dan hopes that a hall mark of his life can be that of service to his God, church, family and friends.
Dusin Dye
Dustin is an Owasso, OK native, baptized at 13 and grew up in independent Christian churches in Tulsa and Owasso. He met his wife of 25 years while attending East Central University in Ada, OK. They have one son. Dustin holds a Master of Business Administration and is an Internal Audit Manager for Cherokee Nation Businesses. We enjoy a number of fun things including camping, fishing, cooking and volunteering our time with various local charities. The Dye's have been involved in the formation of Trinity Owasso since its inception and look forward to the great things Christ is doing through Trinity.
Mark Freeman
Mark was raised in Tulsa, graduated from Edison HS and then got a Bachelors Degree at Bob Jones University. He has lived up and down the east coast, The Carolina’s, Alabama and Georgia, but made a tour through Detroit where he met his wife. Together they have 7 children and 8 grandchildren. When he's not working you can find him doing things like golfing, martial arts, and recreational shooting sports.
John Nowakowski
Raised on a farm near Toledo, Ohio, John earned an aviation degree from Western Michigan University before making his way to Kansas, Texas, Arizona, and eventually Owasso, where he and his wife have lived for over a decade. Members of Trinity for years, they value hard work and service to the Lord. In their free time, they enjoy cooking and working in the yard together.
Greg Roberts
Greg grew up in Oklahoma City and went to college at Oklahoma State University, where he got involved in Reformed University Fellowship and met his wife. Through RUF and Grace PCA in Stillwater, Greg grew in his love for and desire to serve the local church. Upon graduating from OSU in 2014, the Roberts made Tulsa their home and later welcomed their son and two daughters. Although Greg makes a living as an account manager, his passions lie in spending time with his family, hunting, and studying wildlife conservation and management.
Dr. James Wingo
He was born in Germany and raised as an “Army Brat” around the world until the age of 15. He attended medical school at the University of New Mexico and matched at OU-Tulsa for residency. There he met his wife, and they have two wonderful daughters. In his free time, he enjoy woodworking, swimming, and playing the guitar.
Abby Casper
Worship Coordinator
Abby is from Atlanta and moved to the Tulsa area at age 12. Music has always been a part of her life; she spent her teen years participating in a family bluegrass band and has been learning ever since. She began playing in worship ensembles as a teen on fiddle, upright bass, bass guitar, mandolin, accordion, and harmony vocals as needed. She graduated with a Medical Laboratory Technology degree and has worked with children in that capacity. She spends her downtime with husband and children.
Joann DesLauriers
Trinity Kids Vision Director
Joann has been an early childhood education for 35 years as a classroom teacher of young children living with special needs, and with kindergarten through second graders. She served as an early childhood specialist at Oklahoma State University working with future early childhood educators. She is a Disney Teacher Honoree and an Oklahoma Finalist for the Presidential Award in Math and Science. Currently, she is a consultant for the Institute for Childhood Education alongside her work at Trinity.
Allie Hubbard
Trinity Fellow
Allie is Tulsa born and raised. She graduated from The University of Tulsa in 2025 with a B.S. in Communication Sciences and Disorders, with minors in Education, Health Sciences, and Early Intervention. She was a Trinity Youth intern the summers of 2023 and 2024 before joining Trinity staff in the summer of 2025. Allie loves camping out in the children's book section of libraries and bookstores, going on walks at Gathering Place, and eating tacos.
Anna Keltner
Director of Children's Ministries
An educator for more than 20 years, Anna holds a B.S. in Elementary Education from the University of Oklahoma and an M.S. in Educational Studies from Johns Hopkins University. Her work with a crisis shelter early in her career sparked a lifelong passion for advocating for children from hard places and creating safe learning environments. Married for over 19 years, Anna is the mother of three boys.
Tammy Kuiper
Administrative Coordinator
Whether serving as a physical therapy assistant, library clerk, coach, or pastor’s wife, Tammy has spent a lifetime mastering the art of supporting others. Throughout 40 years of marriage, she has raised three children, become an "Oma," and actively served alongside her husband through youth ministry and church plants across six states. Now at Trinity since 2024, Tammy continues to bring her heart for encouraging others to her church and community.
Courtney Nadig
Women's Ministry Co-Director
A Tulsa native and University of Tulsa graduate, Courtney built a decade-long career as a U.S. Army civil servant—earning an MBA along the way—before returning to Oklahoma. She joined the Trinity staff in the fall of 2024, where she equips and supports women in using their gifts for ministry. Outside of her work, Courtney loves mothering her twins and traveling to scenic places with her family.
Jill Popp
Women's Ministry Co-Director
A Dallas native and UT Dallas graduate, Jill began her career teaching high school math in Hawaii before spending years as a stay-at-home mom homeschooling her five children. She joined Trinity's staff in the fall of 2024 after serving on the women's ministry team, and now manages administrative work alongside her busy family life. Driven by caffeine and grace, she spends her days teaching, driving her kids across the Tulsa area, and enjoying family life.
Mishelle Thomas
Trinity Kids Operations Director
Mishelle is Oklahoma born and raised. She and her husband have one daughter. Outside of serving Trinity Kids she also is a health and fitness instructor and has been a long term nanny for three children.
TJ Warren
Director of Worship and Congregational Engagement
TJ holds a degree from John Brown University, and lives in Tulsa with his beautiful family. He and his wife have been at Trinity for many years, and TJ was on staff at Trinity for a number of years before stepping away to work with a local non-profit. He returned to staff in 2025, and spends his spare time in his garden with his family.
Rebecca Zion
Communications Coordinator
Rebecca is a Seattle native who predictably loves coffee and gardening. She has a BA in History with a minor in Comparative Religion from the University of Washington. She spends her time putzing around suburbia, driving her kids to band practices, cross country meets, and soccer games. Rebecca is an avid reader, and is passionate about Jesus, her family, her church, and the Oxford comma.