Sammy Jo Carrington (born Samantha Josephine Dean; formerly Fallmont) is a fictional character on the ABC television series "Dynasty", created by Richard and Esther Shapiro. The niece of central protagonist Krystle Carrington (Linda Evans), Sammy Jo marries and has a son with Steven Carrington (Al Corley, later Jack Coleman).
Sammy Jo was 27 when she married Steven Carrington.
We don't how old she was when she got married, only who she married.