Venus and Serena Williams’ dad has 7-month-old son (photos) By Yvette Caslin | March 22, 2013 | 0 While Serena Williams, 31, remains the youngest daughter of their former coach and dad Richard Williams, 71, she is no longer his youngest child. Pages: 1 2 3 4 5 6 Posted in Sports and tagged richard williams, Serena Williams, venus williams