Our Beloved Staff


Img_4598Rev. Robert R. Malsack, Interim Senior Pastor

Bob was born in Milwaukee, WI and raised in the Upper Peninsula of Michigan (which makes him a Yooper, eh?). He attended college at Central Michigan University where he met his wife to be, Marsha, and dedicated his life to fulfilling God’s will for him. In his desire to bring health and wholeness to people’s lives, he entered college to prepare for medical school. He graduated from college with a calling to bring health and wholeness to people’s lives spiritually through service to the Church.

He attended Fuller Theological Seminary in Pasadena, CA and upon graduating he served a church in the San Joaquin Valley. After four years, he was called back to Michigan where he served a church for 27 years. Within that time period by the grace of God, the church doubled in size and became a strong witness for God in both the community and in the presbytery. During his time at this church, he served the community by coaching football and softball at the local high school. He also served on the township board. This community involvement was a strong influence on the growth of the church.

In the last few years of service to the church in Michigan, he became more involved in the work of the Committee on Ministry in the Presbytery of Lake Michigan. In so doing, God was calling him to serve as a transitional minister to churches while they were between pastors. This again fulfilled his God given passion to seek the health and wholeness of people which now would be done by serving churches in their time of transition, returning health and wholeness to the church in whatever way was most needed. He has served as a transitional minister to First Presbyterian Church of Corpus Christi, First Presbyterian Church of Sparta NJ, Community Presbyterian Church of Port Aransas TX, and most recently, New Braunfels Presbyterian Church.

People have most affirmed his strong and relevant preaching, his care for others, and his strong spiritual perspective on issues. His priority in his ministry is to know God over and above playing religion. Though religion serves as a means to know God it must never inhibit the movement of the Spirit in coming into full relationship with God the Father, God the Son, and God the Holy Spirit. One of the ways he accomplishes this is through a strong ecumenical spirit which respects all the branches on the tree of Christendom.

On a personal level, Bob and Marsha (married for 45 years) have three daughters (a realtor/dietitian living in Orange County, CA, an orthodontist living in Mt. Juliet, TN, and an educator living in Kyle, TX). They also have four grandchildren, three granddaughters in TN and one grandson in Kyle. To relax, Bob enjoys tasting craft beers and Bob and Marsha are acquiring an enjoyment of wine tasting together. Bob has also been seen on the golf course (but hopefully not watched). Bob enjoys following the professional sports teams from his roots, which makes him a Brewers fan (of no concern for you), a Bucks fan (not a threat to the Spurs…yet), and a Packers fan (hmm…this could be an issue).

Though he gave thought to retiring after his last call, the Lord made clear to him that he was not done yet, giving him a strong desire to serve St. Mark Presbyterian Church in its transition which he now looks forward to doing to the glory of God.

Youth DirectorChester Berg, Youth Director
Chester Berg recently answered the call to be St. Mark's full-time Youth Director. His energy and passion for the spiritual growth of our youth make him an ideal fit for St. Mark. Chester is a 2010 graduate of Texas A&M University. He is engaged to be married to his fiance, Stephanie, during the fall of 2015. Some of Chester's hobbies and interests include hiking, cooking, baking, eating, reading, writing, basketball, woodworking, admiring and sometimes restoring classic cars. When asked about his outlook for his new role, Chester shared, "I couldn't be more honored and excited to start working with the Youth at St. Mark. My wife and I are a young couple trying to figure out what it means to live for the one true God who loves us more than we know. We look forward to growing in our faith with St. Mark Presbyterian Church and figuring out a little of God's mystery together."
kluisi-bio-photoKristine Luisi, Early Learning Center (ELC) Director

Kristine joined the ELC staff in 2007 and has worked as an assistant teacher, coordinator of programs, and the assistant director before being named director in 2016. She is originally from New Jersey and graduated from Rutgers University with a degree in Economics. Kristine took leave from her career in the financial world to have her children and upon returning to the workforce knew she wanted to work with young children. She has earned her Child Development Associate (CDA) through coursework at San Antonio College. Kristine and her husband Jim live in Fair Oaks Ranch with their 3 boys. She spends her free time at her sons’ sporting events and also enjoys reading, cooking and walking.


Angela GroverAngela Grover, Christian Education Director

Angela Grover joined St. Mark in July 2014 with husband, Scott Grover and two sons, Aidan and Alec. She excitedly accepted the position of Director of Christian Education in September of 2015. Previously, she served as Director of Youth and Families at Leon Springs Presbyterian Church and continues to be involved with the youth in our synod through Synod Youth Workshop.  Angela hopes to create, encourage and support study of God’s Word in our church and community. When not working, she enjoys time at the gym, crafting and throwing parties.
img_9492Marilyn Bonaguro, Nursery Coordinator
Marilyn has lived in the Boerne area for twelve years and previously lived in Chicago, Illinois.  She also lived in the southeast coast and the west coast.  She has been married to Jack for 52 years, and they have six children and six grandchildren. She and Jack travel a lot.  Her service includes elder of the Adult Christian Education, the Children's Education, and the Family Life Center Kitchen crews.  She also volunteers at the Hill Country Pregnancy Center.  Marilyn has 5 years of service as the Nursery Coordinator, and we have seven trained and loving caregivers who minister to our child care needs.
John Tucker, Traditional Worship Leader
John Tucker, son of St. Mark’s Bob and Meg Tucker, is joining the staff as Traditional Worship Director and conductor of the worship choir. John is the oldest of the youngest (his twin is 11 minutes younger) children of Bob and Meg. He says, “My amazing parents raised me to love God, to use my gifts and talents for God’s glory, and to make a difference in people’s lives. Music has always been an important part of my talent and identity, and still is to this day. I believe music is a gift from God to minister to the heart and to glorify Him.”John moved to Boerne to live near his parents and direct the growing choir programs at both Boerne ISD middle schools. “I am excited to be working each week with the hard working St. Mark choir to offer God our best in musical offerings and in worship leading. I am the proud father of two daughters – one who just graduated from high school and one who just completed sixth grade at Boerne Middle School North.”
Contemporary Worship LeaderDerek Baker, Contemporary Worship Leader
Derek came from St. Andrew Lutheran Church in San Antonio, Texas where he led the Paradise Found Praise Team. Derek seeks to expand opportunities with a Christ-oriented church in growing a contemporary praise and worship service. As owner and general manager of the Guitar School of San Antonio he gives private and class lessons in guitar, reading music and applied theory. Derek teaches guitar at St. Mark and also offers consultation for the Praise Team.
Debby Heitzke, Pianist/Organist
Debby is delighted to begin serving St. Mark as pianist/organist.  She has over 30 years experience as a church musician having served Presbyterian, Methodist and Baptist churches in Connecticut and Texas.  She is a collaborative pianist in the music department at St. Mary's University in San Antonio and also plays for several public and private programs in the area, including BISD.  She is past accompanist for the Children's Chorus of San Antonio, and is a member of the San Antonio Mastersingers.  Debby and husband Steve live in Boerne and have two grown children, Mike and wife Sarah living in Nashville and Kerstin living in Houston.  Debby enjoys being outdoors and traveling.
Financial SecretarySarah Hinman, Financial Secretary
Sarah is delighted to join the staff of St. Mark as Financial Secretary. Sarah and her husband were regular visitors to St. Mark before they became members in November of 2013. Originally from California, they moved to Katy, Texas in 2004 and joined Grand Lakes Presbyterian Church as charter members and soon after Sarah was call to serve as church office administrator until 2012 when they moved to Fair Oaks Ranch. They have 2 children and 5 grandchildren. Sarah loves singing with the Chancel choir and she enjoys cooking, gardening and hanging out with the deer in her backyard.
Jackie ManningJackie Manning, Office Administrator
Jackie Manning joined our church staff as Office Administrator in September 2014, after working at Hill Country Daily Bread Ministries for over six years.
Jackie was born in Franklin, Indiana and began working for the Air Force in Civil Service in 1967 at Elmendorf AFB, Alaska. She retired after 36 years of service working in several positions, among them Executive Secretary, Master Instructor, Chief of Protocol, and Program Manager for International Training. She’s married to Duane Manning who shares her passion for travel.
Alan Reyes, Sexton
Alan was born in Mexico City and came to San Antonio when he was 13-years old.  He worked at Lifetime Fitness and also works at Papa Nachos.  He enjoys dancing, movies and all sports.  Alan has an 8-year old daughter, Yaretiz, "who keeps him young."
Img_4587-001Duane Manning, Commissioned Ruling Elder
Duane Manning is a Commissioned Ruling Elder Parish Associate at St. Mark.  He’s responsible for developing an older adult and visitation ministry.  He also conducts monthly vesper services at Menger Springs Morningside Ministries.  Duane retired from the Air Force in 1999 and is currently employed at USAA.  He’s very grateful and blessed by God’s grace and love, and enjoys sharing the Good News of Jesus Christ with others.  Duane and his wife, Jackie, live in Fair Oaks Ranch and have been members of St. Mark since 1999.