Jane O'Brien Conan's sister also caught the entertainment bug, serving as a writer and producer on projects such as Cybil, The Simpsons and Battery Park, per IMDb.Unlike most of her siblings, Jane ...

Ruth Reardon O’Brien, was a partner at Ropes & Gray law firm outside Boston until her retirement in 1997. The third of six children, Conan has three brothers and two sisters. His siblings are ...