Our Leadership

A lifelong Presbyterian, Ann has been a member of Trinity for 26 years.  She is an Elder and has served on Session twice.  She is a graduate of all four Disciple Bible classes.  She is especially passionate about our Youth programs and has worked with the youth from the time she began attending Trinity.  She recently has been teaching our Middle School children during TYME.  Ann currently serves on our Personnel Committee. 

Ann has recently “retired” from her leadership position as HR Director at Gleneagles, where she worked for almost 40 years.  While at Gleneagles, Ann also directed the Aquatic programs.  She received her B.S. in Education from Indiana University.

Ann has lived in McKinney since 1983 and raised her two children here.  Her daughter, Karla, grew up in the youth program at Trinity.  Karla currently lives in Denver. Colorado.  Her son, Matt, lives in Anna with his girlfriend, Kat, and their two young boys, Tristan and Liam.

Barbara Williamson was hired in 2017 as Trinity’s first Graphic Designer after years of joyfully volunteering her professional graphic services to her church home. Barbara and her husband Ray have been active Trinity members for seven years.

Barbara graduated from the Baltimore Art Institute with graphic coursework at the University of Texas, Portland State University and the Maryland Institute of Art. With over 30 years of professional graphic design experience, Barbara retired from Maryland’s Johns Hopkins University Applied Physics Laboratory Senior Professional Staff in 2011 where she managed a group of 63 graphic artists, editors, desktop publishers web developers and exhibit specialists. Barbara is also a fine artist and loves to visually represent the Word of God.

Beth and her husband John have been members of Trinity since 2008. Although Beth is originally from Dallas, she and John met and married in New Jersey. They relocated back “home” in 2006 and built their home in Prosper. They have 4 grown children and 6 grandchildren.

Beth spent much of her career working in telecommunications technology and as a software business analyst. Beth retired from full-time work in 2013 and now works part-time for Trinity as our Database Administrator and Technology Specialist. Beth manages our communications tool known as Realm and our staff’s computers.

Carrie is a lifelong member of Trinity. She literally grew up in our halls and calls Trinity home and wants all our children to have that same feeling when they walk into our church. Carrie has a degree in Speech Communication from Baylor University and obtained her teaching certificate in 2012 from the University of North Texas. Carrie was a classroom teacher from 2013-2015 teaching 7th and 8th grade. She has served on the Board of Deacons leading the Bereavement Ministry and started the Parents of Multiples Ministry. Carrie also was a part of the McCoy Chapel Renovation Committee and says that might be one of her proudest accomplishments. Carrie has volunteered with Vacation Bible School and with Trinity’s Praise Kids. Carrie is married to Trent Patterson and they have two adorable children, Callan and Clara.

Corey is a long-time McKinney resident who is enrolled in Brite Divinity School at TCU. She has been a member of Trinity since 2021 and recently served as our Communications Specialist. In her free time, she enjoys reading, camping, playing PokemonGo, and hanging out with her cat, Boogie.

Helen Fitzhugh grew up in Dallas, Texas. She went to J.J. Pearce High School and then on to Texas A&M University and earned a degree in Interdisciplinary Studies, specializing in Early Childhood.

After graduation, she and Matt married, moved to McKinney and joined TPC in 2006. Helen taught kindergarten for six years before her son, Brock, was born and she decided to stay home with him. Since then her family has grown to include daughters, Reese and Delaney. She is a certified Pre-K to 6 th grade teacher.

Helen volunteered in our Early Childhood Ministry for three years before becoming the Early Childhood Ministry Director. She is passionate about our youngest members and finds true joy in welcoming the children of TPC to be an important part of our church family.

Jennifer is our Director of Music Ministry. She leads our choir and also coaches our small ensemble groups and guest soloists. Jennifer holds a Bachelor of Music from University of Louisiana in Monroe and a Master of Music from University of Redlands, California. She  has been a part of Trinity Presbyterian Church of McKinney Texas since the Fall of 2013. 

Jennifer performs in many musicals and operas, and produces an annual music recital for TPC’s Women’s Ministry. She also serves as the head of the Connection Committee for the Presbyterian Association of Musicians South Central Region.  

In addition to her career at TPC, Jennifer also owns Jennifer’s Voice and Piano Studio, where she coaches many talented and aspiring musicians, including some of TPC’s members. 

John and his wife, Beth, have been members at Trinity since 2008 and John currently serves as an Elder on the Session.

As the Director of Operations, John will manage the overall operations of the church in conjunction with staff, officers, committees, and volunteers. He will be responsible for finance, purchasing, property management, HR and IT management, and other continuous improvement areas.

Tami Voyles grew up in Houston, TX, and attended First Presbyterian Church of Pasadena. After graduating from J. Frank Dobie High School, she attended Texas A&M University where she earned a Liberal Arts degree in English Literature. Along with this, Tami is also a Certified Christian Educator within the Presbyterian Church(USA).

While at Texas A&M, Tami met her husband, Bradley. After graduation, Tami moved to Dallas where Bradley was already working. They were married in 1993 and soon moved to McKinney. They immediately joined TPC and began working with the youth. Their first group consisted of just 4 youth!

Tami joined the staff in 2000. Tami is the supervisor for the Early Childhood, Elementary, and Youth ministries while working directly with college age students, adult classes, and the confirmation class. She works closely with other ministries of the church to have a comprehensive education ministry for all our congregants. Tami and Bradley have 3 children: Brett, Jade and Devon. Tami loves long walks with her dog MacKay, yoga, good books and traveling.

Valerie Mowell grew up in Omaha, Nebraska and spent a large part of her childhood participating in competitive baton twirling. Upon graduating from Millard South High School, she received a twirling scholarship to the University of Houston. There, she earned a Bachelor of Arts degree in Interdisciplinary Studies, specializing in K-8 Education and in Reading. She met her husband, Scott, at a Presbyterian Cursillo (now Pilgrimage) retreat and they married in October 2001. They have two daughters, Kaylie, who is a sophomore at Texas State and Makenna, who is currently taking a few classes at Collin College and working at North Texas Performing Arts. They also have a 12-year-old terrier mix named Layla who is really spoiled! Valerie received a Nonprofit Management Certification in 2014. The family continued living in Houston until 2018 when Scott received a job transfer to the Dallas area, and they decided to settle in McKinney. Over the years, Valerie has worked in education, ministry, nonprofits and the business world. In her free time, she enjoys reading, being in nature, chilling with Netflix and spending time with her family.

The Pastoral Care Team volunteers assist Mally with the Christian care of our congregation, complementing the beautiful ongoing work of our Deacons’ Sunshine Crew, our Stephen Ministers and of course the faithful members of our Daily Prayer Ministry.

Rev. Dr. Ralph Graham (on right) has had a long and successful career that included pastoral ministry in the United States and Scotland, as well as academia, Presbyterian missions, and as the Vice President for Programming at Mo Ranch. Ralph came to us as a Parish Associate in 2010. Incredibly, since that time he has made over 4000 pastoral contacts with members, visiting in person, on the phone and sending cards! In addition to Ralph and Jeannie making Trinity their church home, their daughter and son in law Leslie and Ward Vestal (along with their children Alex and Cassie) and daughter Holly (along with Holly and David’s children Zoe and Laney) are also members here. We are so incredibly grateful to Ralph for his longstanding compassionate service to Christ here at Trinity!

Mark Widmer (on left) is a retired Army officer, former Special Education teacher, and a retired high school assistant principal. He is married to Terry and they with 2 sons and 6 grandchildren, all who reside in the Dallas area. He has served as a deacon, a trustee, and as an elder. After living in San Antonio for the past 20+ years, Mark and Terry relocated here last fall to be closer to family. During their time in San Antonio, Mark completed two years of training with Mission Presbytery and was certified as a lay pastor (CLP).  Following completion of the certification, he served at Holy Trinity Presbyterian Church as a volunteer CLP focusing on youth, Christian Education, and pastoral care.

Mary Hill (second from left) has been an active member of Trinity since 2008. She is an ordained Deacon and is also a Stephen Minister. She serves on our Deacon-sponsored Sunshine Crew, which reaches out to our older members. In addition to this, she has served as the Moderator of our Women’s Ministry for a number of years. She attends the Daily Christian Living Sunday School Class and is involved in a number of other TPC activities. Mary has a daughter and two grandchildren who reside in McKinney.

Hal Pruessner (second from right) and his wife Debra have been a close team since meeting in the 8th grade. They joined Trinity in 2015 and have completed all four Disciple Bible classes. They are both Stephen Ministers  and have both served as Deacons. Hal is currently Deacon coordinator of the Open Hearts Ministry.