Born on Feb. 1. 2001, Jack Marsden is Marsden's eldest son, and it's pretty clear from social media that he's been a proud papa since day one. And, who could forget when Mardsen took him as his plus-one to the SAG Awards in 2017?! On the red carpet, Jack hinted he was interested in a career in music, but since then, he's started modelling and even walked during Milan Men's Fashion Week for Dolce & Gabbana in fall/winter 2018/2019.