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Leadership Team

  • Fr.. Mark Carr , SJ

    Executive Director
    Fr. Mark Carr, S.J., is director of the Jesuit Retreat House on Lake Winnebago, Oshkosh. Originally from Wheaton, IL, he attended Marquette University before entering the Jesuits in 1993. He is experienced in the spirituality, ministry, and governance of the Society of Jesus. He has preached and directed retreats at Jesuit retreat houses in Oshkosh (WI), Lake Elmo (MN), and Los Altos (CA). Since ordination in 2005, Fr. Mark served as teacher and administrator in Jesuit high schools including Walsh Jesuit High School (Cuyahoga Falls, OH), Marquette University High School (Milwaukee, WI), and Red Cloud High School (Pine Ridge, SD). He was also the socius/assistant provincial for the former Wisconsin Province of the Society of Jesus. Outside of retreat work, Fr. Mark currently sits on the executive committee of the National Catholic Committee on Scouting and ministers as a Scout chaplain. He also serves on the board of directors for the US/Canada region of the Pope’s Worldwide Prayer Network.
  • Sr. Susan Kusz , SND

    Associate Director
    Sr. Susan Kusz, SND, has served in the ministry of spiritual direction and retreat work for many years. A Sister of Notre Dame of the United States of America, Sr. Susan's earliest ministries were in the field of education in teaching, elementary school administration, and religion curriculum software design for the Diocese of Toledo. In retreat ministry, Sr. Susan served her province in directing Spiritual Life Ministries at Lial Renewal Center in Ohio. She then worked for many years in an international sabbatical program of spiritual renewal in New Mexico. Prior to coming to Oshkosh JRH, Sr. Susan served on staff at the Jesuit Center in Wernersville, Pennsylvania. Sr. Susan takes special delight in God's "First Word" spoken in Creation and rejoices in the beauty that makes the JRH grounds such a sacred manifestation of God's goodness for all who come to this holy place.
  • Fr.. Jack Treloar , SJ

    Assistant Director
    Fr. Jack Treloar, S.J. Fr. Jack Treloar entered the Jesuits in 1957 and was ordained in 1970. He has been directing retreats since 1978 and providing spiritual direction throughout that time. Fr Jack has a doctorate in philosophy from Michigan State, and two theology degrees, which prepared him well to be dean for nine years at the First Studies program for young Jesuits at St. Louis University. He spent 17 years at Marquette University as assistant chair and chair of the Philosophy Department. For four years he served as academic dean of the Jesuit School of Theology at Berkeley, California. Fr. Jack was assistant to the provincial for higher education in the Wisconsin Province from 2006-2012. He joined the staff of the Jesuit Retreat House in Oshkosh in 2012.
  • Fr.. Jim Shea , SJ

    Assistant Director and Hosting
    Fr. Jim Shea, SJ, (age 51), has been a member of the Retreat Team at JRH since 2021. A native of Skokie, Illinois, Fr. Jim attended Loyola University and worked at Misericordia Heart of Mercy in Chicago before entering the Society of Jesus in 2004. After being ordained as a priest in 2015, Fr. Jim served as a teacher and chaplain at Cristo Rey Jesuit High School in Chicago. He also developed his interest in spiritual direction and retreat ministry during short assignments at Demontreville Jesuit Retreat House (Lake Elmo, MN) and Jesuit Retreat Center (Parma, OH).
  • Mr. Jeffrey Martin

    Jeff Martin, chef and kitchen manager at the Jesuit Retreat House, continues to carry on the JRH tradition of helping retreatants to not only feed their souls but also to nourish their bodies as well. Jeff learned to cook while growing up in a family of eight in Oshkosh. He began his career in the food industry by washing dishes and doing short-order cooking for local restaurants. Eventually, Jeff’s faith journey led him to attended three (3) retreats at the Jesuit Retreat House over a one year period. He really enjoyed each retreat. And, as the Holy Spirit sometimes works, a door opened for him at the retreat house in 2002 and he walked through it. By God’s hand, he has been JRH's chef for the last 12 years.
  • Mr. Charles Linde

    Facilities Manager
    Chuck Linde, our current Facilities Manager and the Construction Manager has a long and varied history with the retreat house. Chuck was first hired in 1984 at age 16 by Fr. Jack Rainaldo as a maintenance worker. Then four years later (1988) he was promoted to superintendent of buildings and grounds. In 1991, Chuck earned a bachelor’s of science degree in Industrial Technology with concentration in building construction from the University of Wisconsin – Stout. After graduation, from 1992 thru 1996, Chuck worked as construction project manager for a commercial contractor that specializes in building schools, medical clinics and a variety of commercial facilities. In 1996, Chuck returned to JRH as our full-time Facilities Manager.
  • Mrs. Tanya Hielke

    Registrar / Administrative Assistant
    Tanya grew up in Oshkosh with her parents and seven siblings. After a twenty-year career in retail management, Tanya completed(2007) Commissioned Ministry Program with the Diocese of Green Bay where she received her education in theology and certification in Youth Ministry. Tanya served area parishes for fifteen years under various titles; Youth Minister, High School RE Coordinator, RCIA Coordinator, and Adult Continuing Education Facilitator for the Diocese of GB. In 2016 Tanya completed her training in spiritual direction. Tanya lives with her husband Darryl, in Pickett, WI. They have five children and eight grandchildren. Tanya currently is our Registrar and Administrative Assistant.
  • Mike Casey

    Bookkeeper/Tech Liaison
    Prior to joining JRH’s team Mike worked as a youth/young adult minister and retreat worship leader in the Diocese of Green Bay and as a freelance bookkeeper for area small businesses. Mike enjoys being able to combine his interest in JRH’s day-to-day business processes with his enjoyment of the retreat ministry world. Mike felt drawn to work at JRH both because of his experience as a retreat leader, and because of his strong belief in the power of contemplative silence to heal, focus, and reorient one’s life. In his spare time, Mike gigs as a guitarist and singer in several local bands. His main groups are Audiochonk, a high-energy rock cover band, and Brainstewed, a Green Day tribute act. He also plays in an acoustic trio and is grateful to be able to regularly join his dad (a tin whistle player) and other musicians in a semi-monthly traditional Irish music session.