Celebrity Parents Ryan O'Neal Is a 'Great' -Grandfather Check out the beaming Hollywood patriarch holding the latest addition to the celebrity clan By People Staff Published on May 28, 2013 05:15 PM Share Tweet Pin Email Photo: Courtesy Ryan O'Neal You know that handsome young man from Love Story? He’s a great-grandfather now! Ryan O’Neal proudly shows off the famous Hollywood clan’s latest addition – dashingly decked out in a straw hat and shades – in holiday weekend photos posted on Twitter and Facebook. “Had a wonderful day with my new great-grandson Sidney,” O’Neal, 72, writes. “Happy #MemorialDay to all!” Sidney is the grandson of O’Neal’s son Griffin O’Neal, 48, who has had well-documented troubles in his personal life and with dad Ryan. But if great-grandpa’s beaming smile is any indication, things may be looking up for the O’Neals.