Sara Gilbert: Sara Gilbert. Actress: Poison Ivy. Sara Gilbert was born on January 29, 1975, as Sara Rebecca Abeles at St. John's Hospital and Health Center in Santa Monica, California, to Barbara Cowan and Harold Abeles. Barbara was previously married to the late Paul Gilbert. At the age of six, when Sara saw her sister Melissa Gilbert get a star on the Hollywood Walk of Fame, she told her mother that she...