Article continues below advertisementPaul McCartney - Youngest Daughter Born When He Was 61Source: MEGAPaul McCartney welcomed his youngest daughter, Beatrice Milly McCartney, on October 28, 2003, when he was 61."When you're older, you stop to savor it. You've learned to slow down and enjoy the giggles, the cuddles, the whole ride," said The Beatles legend.Article continues below advertisementClint Eastwood - Fathered His Youngest at 66Source: MEGA"You're more patient when you're older. You don't sweat the small stuff.