Vestry Members

David Mahan

Vestry, Warden

David Mahan is the Executive Director of the Rivendell Institute at Yale and a Lecturer in Religion and Literature at the Institute of Sacred Music, Yale Divinity School. He and his wife Karen have been members of St. John’s since 1993.

Michèle Sigg

Vestry, Warden | St. John’s Blog Editor |
Racial Justice Fellowship

Michèle Sigg lived in Alabama and Georgia before moving to France with her missionary parents at the age of eleven. When she returned to the United States, she attended a conservative Presbyterian college (Covenant College) for two years. Then she studied at the University of Pennsylvania (B.A., M.A. French Literature) in Philadelphia where she met her husband, Sam, also a missionary kid. After teaching French at the university and high school levels, she began working as project assistant on the Dictionary of African Christian Biography (  She is now executive director of the DACB, an open access online resource that documents the stories of African Christians responsible for the spread of the gospel in Africa from the time of Christ to the present (all traditions, all countries). Discovering African and world Christianity played an important role in her spiritual and theological journey, in particular, understanding the role of women in leadership. In 2012, she received an MTh from Africa International University in Nairobi, Kenya and in 2018, a doctorate in World Christianity from Boston University. She is a visiting fellow at the Rivendell Institute where she manages Yale Faculty Roundtable initiatives. 
She and Sam have lived in New Haven since 2000 with their three children, Johan, Annie, and Catherine.

Mike Glerup

Vestry, Treasurer

Mike and his wife, Kate, joined St. John’s in 2018. He is the Executive Director of the Project on Religious Freedom & Society in Africa at Yale University’s Whitney and Betty MacMillan Center for International and Area Studies. He is the Executive Director the Center for Early African Christianity and the General Editor for the multi-volume series — Ancient Commentary Texts. 

Rebecca Lewis

Vestry, Clerk

Rebecca is in her third year at Yale Law School. She is a proud native of Chicagoland and plans to return upon graduation. She grew up in the Presbyterian Church, and was drawn to St. John’s by the liturgy, music, and deep community. Her focus is on financial regulation, and she loves thinking about the relationship between economics, law, and faith.

Jennifer Brown


Jennifer Brown and her mother, Florice, have attended St. John’s since 2018. She is a long-time New Haven resident. She is racial justice editor of the St. John’s community blog and a member of the Racial Justice Fellowship.

Drew Collins


Drew Collins is an Associate Research Scholar at the Yale Center for Faith & Culture and a lecturer at Yale Divinity School and the humanities faculty at Yale College. He and his wife Mary have three children—Agatha, Archie, and Wilfred.

Tim Hersey


Tim is in his third year of an Economics PhD at Yale. He moved to New Haven from Adelaide, Australia and was delighted to join the St John’s family in 2019. His research concerns development economics. He loves discovering how economics and data relate to faith and how they can be used to encourage human flourishing. 

Lori Linger


I was baptized, accepted Jesus as my saviour (at 16), and was married in the Episcopal church. In college, I was involved in Christian fellowship. I have served in hospitality, as a Sunday school teacher, a deacon and worked as an assistant director and director of Vacation Bible School at Trinity Baptist Church New Haven. I love Jesus and am willing to continue my service to Him and the church here at St. John’s.

Bill Rowley

Vestry | Lectionary Meditation Coordinator

Bill and his wife, Rebecca, joined the St. John’s family in 2018. Prior to moving to New Haven, Bill taught philosophy and writing at University of Rochester, where he earned his PhD in Philosophy in 2016. Professionally, he specializes in epistemology, early modern philosophy, and philosophy of religion/philosophical theology – but likes to converse with anyone interested in matters at the intersection of faith and reason.

Brian sullivan


Ministry Leaders

Lenore Hammers

Altar Guild

Lenore Hammers has been at St. John’s parish since 1993. She worked with Campus Crusade for Christ (now known as Cru) for ten years in the campus ministry, the last three of which were at Yale University. In 1999 she graduated from Southern Connecticut State University with a Masters in Social Work. She currently works as a liver transplant social worker at Yale New Haven Hospital and the Yale New Haven Transplant Center.
During her time at St. John’s she has served in various capacities. She is currently active in the welcome team ministry, altar guild, choir and the band, and generally pitching in where needed. In her free time she likes writing and has self-published a historical murder mystery called Measure of Faith: A Murder Mystery. She is also currently learning to play the fiddle.