Mrs. Biddle valued the input and wisdom of her friends and trusted advisers, and, from the beginning, the foundation’s Board of Trustees has included family and non-family members. The foundation continues her practice of actively engaging members of the community to serve as trustees. Currently, the board is comprised of three family and four non-family members.

Since its inception, Mrs. Biddle’s family has played an integral role in guiding the foundation.The original trustees included her son Nicholas D. Biddle, daughter Mary D.B.T. Semans, and son-in-law James H. Semans, M.D. Dr. and Mrs. Semans both served on the board for nearly 50 years, as chair and vice-chair, respectively. Succeeding generations have continued to oversee Mrs. Biddle’s philanthropic legacy. Granddaughter Mary Trent Jones was a board member for 32 years, including eight years as chair. Today, family trustees are great-grandsons Chris Harris (chair), Ben Jones, and Joe Lucas (joins  the board in January 2020).