Winnie is survived by three daughters : Dr. Wyndolyn Barnes of San Francisco , California , Dr. Diane Barnes of San Rafael , California , and Winifred -LRB- Bonnie -RRB- Barnes of Pamplin , Virginia ; two siblings , Judge Horace A. Davenport of Norristown , Pennsylvania , and Katherine Williams of San Francisco ; and 11 grandchildren and 16 great-grandchildren .