Soul has been married five times and has five sons and a daughter. He first married the actress Mirriam “Mim” Solberg (née Russeth), in 1964. The couple had one child named Kristofer that same year, but the marriage lasted only a year.
Soul married actress Karen Carlson in 1968, after they met on the set of the television series Here Come the Brides. The couple also had a child named Jon in 1971, but divorced in 1977.
In 1980, Soul married Patti Carnel Sherman, ex-wife of Bobby Sherman, the 1960s pop idol and Soul’s co-star in Here Come the Brides. They had 3 children, Brendan, Timothy and Andrew. They divorced in 1986. Soul was jailed and ordered to attend therapy classes for alcoholism, after attacking her when she was seven months pregnant.
In 1987, Soul married actress Julia Nickson. The couple had one child, China Soul, who is a singer/songwriter.
Soul married his fifth wife, Helen Snell, in June 2010. They had been in a relationship since 2002 after meeting when Soul was working in the British stage production of Deathtrap.