The Rev. Chuck Treadwell


Send Chuck an email

Chuck grew up in South Carolina, Georgia, and Kentucky in a loving family full of Baptist clergy. He attended Georgetown College, receiving his Bachelor of Arts degree in Psychology in 1982. Chuck moved to Texas to work at a residential treatment center for emotionally disturbed teenagers. He met his wife, Chris, a nursing student at U.T.A., at a health club (a chique 80’s couple!) who introduced him to the Episcopal Church. They married in 1985, the same year he was confirmed.

With the zeal of a convert, Chuck went to seminary at the University of the South in Sewanee, TN. After graduating in 1989, Chuck was ordained a deacon at St. Matthew’s Cathedral in Dallas that same year. His first clergy position was at St. Michael and All Angels, Dallas, where he was ordained a priest. While there, he served as a curate and priest to Young Single Adults, and later, as the School Chaplain. In 1993, Father Chuck dove headlong into being a rector for the first time at St. Peter’s in McKinney, TX. Eleven years later, he moved to Waco to be the rector of St. Paul’s, where he began serving in July 2004.  On Palm Sunday, March 29, 2016, Chuck began serving as the 14th rector of St. David’s in Austin.

In the spring of 2014, Father Chuck completed a Doctor of Ministry from Sewanee. Along with his regular duties, Father Chuck has served in various capacities in Diocesan ministry.For nearly a decade he has served as co-facilitator for “Curate Camp”, a diocesan ministry for newly ordained clergy. Many of the Curates in this program served at St. David’s.

Father Chuck and Chris have three children – Caleb, Colton, and Caroline. Caleb and Colton are young adults, both in college at this time. Caroline is in the 9th grade. With the time not committed to family and the priesthood, Father Chuck is an avid hunter, hiker, fisherman, and guitar player.

Katie Wright

The Rev. Katie Wright

Associate Rector

Send Katie an email

The Rev. Katie Wright joined St. David’s Episcopal Church as the Associate Rector in August of 2012.  She served as Locum Tenens from February 2015 until March 2016, when she gratefully returned to being the Associate.  She serves on the Boards of The Episcopal Health Foundation and Capital IDEA.  Previously rector of St. Andrew’s in Elyria, Ohio, she has also served as Associate Rector in charge of youth and family ministries at St. Mark’s in Glen Ellyn, Illinois; Youth Minister at Ascension in Dallas, Texas; and Director of Children’s Ministries at Transfiguration in Dallas, Texas.  She received her Master of Divinity degree, Anglican Track, from Perkins School of Theology at SMU and her Bachelor of Arts degree from Claremont McKenna College.

Katie was born in Phoenix, Arizona and is married to Jimmy Wright.  They have three children:  Luke (1997), Rachel (1999) and Sarah (2011…yes 2011).

Bob Gribble

The Rev. Bob Gribble

Associate Priest

Send Bob an email

Bob Gribble is a native of Houston, but he and his wife, Gretchen, got to Austin as fast as they could. Bob got his BBA from the University of Texas in 1976 and his Master of Divinity from Virginia Seminary in 1979. He has served five Episcopal parishes in and around the Houston area for more than 30 Years. Bob retired in 2009 but is out of retirement now assisting at St. David’s where he works part-time overseeing the pastoral care needs of the parish.


The Rev. Chad McCall

Associate Priest

Send Chad an email

The Rev. Chad McCall was ordained a priest in February 2012 and has served at St Peter’s in Lago Vista, Texas as Pastoral Leader and Vicar since September 2010.  Chad was born in Columbus, Ohio.  He graduated from Davidson College in 1993 with a BA in Economics and received his MBA from Georgia Institute of Technology in 1995.  After working in healthcare and finance for just over ten years, Chad experienced a call to ordained ministry and entered Duke Divinity School where he earned his MDIV in 2007.  Chad has lived in Austin for the last 8 years and has two children Carlie (12) and Cade (9).

The Rev. Michael Horvath


Send Michael an email

Michael was ordained to the priesthood in the Diocese of New York in September 2017, and graduated from The General Theological Seminary. While in seminary, he was a seminarian intern at Saint Thomas Church Fifth Avenue, St. Augustine’s Croton-on-Hudson, and St. Edward the Martyr. Prior to a call to ordained ministry, Michael was a corporate lawyer in Boston and New York City, specializing in the financial services and investment sectors. Michael graduated with a B.A. in Political Science from Virginia Commonwealth University, and a Juris Doctor from the University of Richmond Law School. He was born in the Philippines, and grew up in Virginia where his family still lives. Michael and his husband, Charles Calhoun, have two dogs – Max and Henry. Michael is an avid baker, which, by necessity, also makes him an avid runner.



The Rev. Dr. Carol Petty

Assisting Priest

Send Carol an email

Carol serves as Canon for Wellness and Care and Safe Church Minister for the Episcopal Diocese of Texas (EDOT).  She works in EDOT’s Austin Diocesan Center, located on the campus of the Seminary of the Southwest.  At St. David’s, Carol provides clergy support as needed. She also serves monthly as Sacramentalist for the SoCo Episcopal Community, a ministry of St. David’s.

Prior to moving to Austin, she served as Rector of Holy Comforter Episcopal Church in Angleton, Texas. Carol is married to George Zwicker (retired) and together they have six grown children and 13 (so far!) grandchildren.  Carol and George are pleased to make St. David’s their home parish.




Dan Joslyn-Siemiatkoski

Postulant – Diocese of California

Dan Joslyn-Siemiatkoski is an Associate Professor of Church History at SSW and a Postulant in the Diocese of California. After ordination, he intends to continue as a professor at SSW in pursuit of his vocation as a theological educator in the Episcopal Church. Dan covers the whole range of Christian history in his course, with special research interests in Jewish-Christian relation and Anglicanism. He is married to Jennifer Joslyn-Siemiatkoski, and they have two children, Greg and Miriam.


Kelly Mahon

Diocese of San Diego

Kelly is a native of San Diego, CA and spent his entire life in Southern California before moving to Austin for Seminary.  He previously worked as a youth minister at two parishes in the Diocese of San Diego.  This summer, he did his Clinical Pastoral Education at the National Institutes of Health (Clinical Center) in Bethesda, MD.  He’s looking forward to being involved in parish life at Saint David’s with an emphasis in pastoral care and Christian formation.

Outside of school his interests are travel, cooking, and photography.

Denise Muller

Diocese of Arizona

Denise Muller is completing a Diploma of Anglican Studies at SSW and is a Postulant in the Diocese of Arizona. She is a spiritual director and has supervised spiritual directors. Denise was the Arizona Field Director with a national prison ministry organization and has worked in HIV, drug, and violence prevention. Upon completing her studies at SSW, Denise plans to return to the Diocese of Arizona to serve as a priest.