Re: Could Regina and Jefferson be siblings? Home › Forums › Once Upon a Time › General discussion and theories › Could Regina and Jefferson be siblings? › Re: Could Regina and Jefferson be siblings? September 21, 2012 at 5:21 am #154206 faux paxParticipant Interesting point about the first name thing. But the Facebook app just proved that Jefferson couldn’t be older than Regina. He’s only 29 and i’m sure she is older by at least a few years, but maybe the deal with Cora was made after she was born so Cora had to give up her second born? [adrotate group="5"]