Robert Wagner marked his son-in-law Barry Watson's birthday with a rare family photograph - and a message that offered a glimpse into a bond shaped by more than four decades of shared love and loss. "Join Jill and I in wishing our terrific son-in-law Barry Watson a Happy Birthday 🎉 Always fun times when you're around-grateful for the laughs, the love and these unforgettable moments together," Wagner wrote via Instagram on Thursday, April 23, featuring a photo of him and Watson, 52, and granddaughter Clover. "Cheers to another great year ahead!🎉 @realbarrywatson.