Rebecca MuSeiDo Hawes, Sensei, Guiding Teacher
Rebecca MuSeiDo Hawes (Sensei Rebecca) is a dharma successor of Sensei Bob JinGen Ertman, and became empowered to teach and transmit the dharma in the lineage of the White Plum Asanga on May 11, 2024. She became a Lay Preceptor through JinGen Ertman, Sensei after receiving the Precepts at One Heart Sangha in May, 2023. She is in training with the Zen Peacemaker Order and will complete training in the fall of 2025. Sensei Rebecca is actively engaged in Householder Life. She is committed to the democratization of data and science, and, to the belief that it is incumbent upon those of us engaged in public health to connect the so-what’s from research, across the sciences as well as to the public. This commitment extends to her Zen teaching approach - everyday life is practice, there is nothing missing. When she’s not at her desk or sitting with her sangha, you’ll find Sensei Rebecca drinking way too much coffee, walking the local woods, hills and beaches and, playing board games alone or with family and friends.
Bruce ShiHo Lindsay, Sensei
Bruce ShiHo Lindsay, Sensei (Sensei Bruce) is a dharma successor of Sensei Robert JinGen Ertman and became empowered to teach and transmit the dharma in the lineage of the White Plum Asanga on May 31, 2025. He teaches with One Heart Sangha and is the primary point of contact for newcomers, offering the Introduction to Zen orientations by appointment on Wednesday evenings. He began practicing Zen at the Denver Zen Center in 1994 and has been a member of One Heart Sangha since 2021. He is also a member of the Rochester Zen Center and the Zen Peacemakers.
Bob JinGen Ertman, Sensei (Retired Guiding Teacher)
On May 31, 2025 Robert JinGen Ertman (Sensei Bob) retired from his position as Guiding Teacher at One Heart Sangha. He will continue teaching with OHS as well as with Harbor Light Zendo in Annapolis, MD. He is a dharma successor of Sensei Rose Mary Myoan Dougherty, in the lineage of the White Plum Asanga, transmitted on September 15, 2015. Empowered to teach and to transmit the dharma, he is also a member of the Zen Peacemakers and is grateful for the way it has shaped his practice in all of life. He writes and teaches haiku as a practice of being fully in the present moment. He received the precepts at Boundless Way Zen from James Ford, David Rynick, & Melissa Blacker. Bob is a retired federal attorney and lives in Annapolis with his wife, Phyllis. Together they are facilitators of a Mindfulness Practice Group at the Unitarian Universalist Church of Annapolis. In his spare time, Bob collects fossils, with his daughter Hallie when he can (They began when she was 4 - she's in her 30’s now). Sensei Bob also is part of many Zen Peacemakers Bearing Witness retreats, and helps to coordinate Street Retreats in Washington DC. He teaches weekly Haiku as practice. To sign up for his mailing list, contact him at RobertErtman@msn.com.
In Memoriam
Rose Mary Myoan Dougherty, Sensei (1939-2019)
Rose Mary founded One Heart Sangha and served as the first Guiding Teacher. She began practicing Zen as a student of Charlotte Joko Beck in the 1980’s, and then joined Clare Sangha in Baltimore with Roshi Janet Jinne Richardson. In 2006, she was empowered to teach and transmit the lineage of White Plum Asanga and founded the sangha. She has left a strong dharma tradition in One Heart Sangha. Gate Gate Paragate Parasamgate Bodhi Svaha! Peaceful strong teacher, continuing to transmit the dharma in all ways.