Born. To Sara Delano Roosevelt, 22, granddaughter of F.D.R., daughter of Jimmy, and Anthony di Bonaventura, 24, concert pianist: a son; in Washington, B.C. Weight: 8 lbs. 5 oz.
Born. To Ann Blyth, 25, singing cinemingenue (The Student Prince), and Dr. James McNulty, 35, Hollywood obstetrician: their first child, a boy. Name: Timothy Patrick. Weight: 7 Ibs. 8 oz.
Born. To Victor Borge, 45, Danish-born pianist-wit whose Comedy in Music has broken all Broadway records for one-man shows (ninth month, heading toward 300 performances), and Sarahbel Roach Borge, 34, his second wife: a son. Name: Victor Bernhard. Weight: 6 Ibs. 8 oz.