Gaelyn is a Zen priest, and a Dharma successor in the lineage of Suzuki Roshi. Gaelyn began training at San Francisco Zen Center (SFZC) in 1985 and was ordained by Tenshin Reb Anderson Roshi in January 1991. She received the Dharma name, Setsuan, which is translated as Snow Hut. Her second Dharma name is Konjin, Establish Love. She became Tenshin Roshi's Dharma successor in 2003 in the U.S., and was acknowledged in 2005 at the head Soto Zen temple in Japan, qualifying to receive the title of Kaikyoshi.
Gaelyn lived and trained at Tassajara Zen Mountain Center, SFZC's monastery, for 12 years, serving in many positions, from kitchen crew through Director. She lived and trained at Zen Center's Green Gulch Farm and Beginner's Mind temple for 6 more years. She served on SFZC's Board of Directors for 7 years and currently advises the Affiliates Council. She trained in Japan, at Hosshinji with Harada Sekkei Roshi in 1991-92, and with Robert Aitken Roshi in Hawaii in 1995-96. Gaelyn moved to Houston in 2003 to serve as the Guiding Teacher of the Houston Zen Community.

Gaelyn was born in 1951 in San Luis Obispo, California and was raised in Cayucos, California, population 1,900. She moved north to attend UC Berkeley, majoring in Russian Intellectual History. After graduating she sought right-livelihood, beginning with running an after-school program for children, followed by apprenticing as a baker and pastry chef, then serving as a paralegal for family law.
She has two stepdaughters, Jessie, an economist in Chicago, and Sarah, an obstetrician in San Francisco, and four grandchildren, Oscar, Rose, Joachim and Sofia.
She values interfaith communication as well as intra-Buddhist communication to further understanding of the various Buddhist schools. She maintains close ties, both official and social, with the Soto Zen head temple in Japan, and serves on the Board of the Soto Zen Buddhist Association. She is also a member of the American Zen Teachers Association and the Association of Soto Zen Buddhists. She hopes to see, in this lifetime, the teachings of Buddhism flourish and show their Western colors and Western styles for the benefit of everyone.