Complex sentence: His mother, Patricia Locke, was a member of the Bahá'í US National Spiritual Assembly who has since passed on and who was named posthumously to the Women's National Hall of Fame in Seneca Falls, NY.
Split into simpler sentences: His mother, Patricia Locke, was a member of the Bahá'í National Spiritual Assembly of the United States who has since passed on. She was named posthumously to the Women's National Hall of Fame in Seneca Falls, NY.