Vice President Joe Biden’s sister and mother will be honored by the Society of Irish Women at its annual St. Patrick’s Day dinner, a society founder confirmed Friday. Valerie Biden Owens, Mr. Biden’s sister and lifelong campaign manager, will be a principal speaker at the event. Jean Finnegan Biden, Mr. Biden’s mother, will be an honored guest. She will sit at the head table but will not give a speech, said Evie Rafalko McNulty, one of the society’s founders. “Oh, my God, it’s wonderful, because she is Scranton; she’s from Scranton,” Mrs. McNulty said about the confirmation that Mrs. Biden...