They had a son named Gage Dennis age 34.
(28 July 1983 - 28 December 1983) (his death) (1 child)
Only learned after falling in love with last wife Shawn that she was actually his cousin Mike Love's illegitimate daughter. Despite their distant blood relationship, Dennis and Shawn could legally marry - and doing so capped off for Dennis the hatred he'd felt for Mike, since the early Beach Boys days.
At the time of his death, Wilson was married to (but separated from) Shawn Marie Love (born Shawn Marie Harris on December 30, 1964), the mother of his son Gage, born September 3, 1982. Shawn Marie died aged 38 in September 2003 of liver cancer.