Minister and Staff

Rev. Marta Valentín, Minister

Rev. Marta most recently worked for the UUA’s New England Region specializing in ministerial transitions. Prior to that, Rev. Marta served for 7 years as minister for First Church Unitarian in Littleton, MA. Her first settled ministry was at the First Unitarian Universalist Church in New Orleans where she arrived two weeks before Hurricane Katrina. She has also served as interim minister for the Unitarian Universalist Church of Arlington, VA, and at the UUA’s former staff group, Identity-based Ministries. She believes in shared ministry and views her ministry as helping her congregants find theirs.

Rev. Marta has served on various UUA and UU Minister’s Association committees, including the continuing education committee. She is a founding member of the regional anti-racism/anti-oppression/multicultural group GRACE: Growing Racial and Cultural Equity.

Rev. Marta lives in Ayer with her wife and their daughter. She was born in Spanish Harlem, NYC, and identifies as a Nuyorican – a Puerto Rican New Yorker. She is a poet, and her prayers and poems have been published by Skinner House Books in her meditation manual, A Long Time Blooming. Her works have also been published in a number of other books, including Lifting Our Voices and Becoming: A Spiritual Guide For Navigating Adulthood. She has also worked as a music producer for WGBH Radio and as a high school teacher.  She is a very good salsa dancer, and often turns to salsa music when she is stuck with a sermon.

Rev. Marta can be contacted at

Rev. Marta is in the office on Mondays. Typically she works later on the first and second Monday because she attends the Worship and Board meetings on those nights, respectively. For any of the other Mondays she can stay later if an appointment is made for such a purpose. She also will come in later on the Mondays that she has night meetings. But generally, she is in around 9:30-10:00 am. She can, however, arrange to meet with anyone after any service she is leading, the schedule of which you can find on our calendar.


Mimi Olivier, Director of Religious Education
Mimi, our Director of Religious Education, was raised in the UU church, and has a long history of working with children and youth, in both therapeutic settings and as an after school care provider.  In addition, she has a strong commitment to social justice, and is a longtime member of the Medford community.

Mimi can be contacted at

Fred Humphrey, Sexton
Fred has been our church sexton for fifteen years.

Brenda Bonetti, Office Administrator
Brenda is our office administrator, handling correspondence, payroll, creating orders of service, and more.

Brenda can be contacted at