Mezue ahịrịokwu na-esonụ: Na June 30, 1960, Peter lụrụ odeakwụkwọ ya dị afọ 24 bụ́ Beverly Mater (b. 1935). Ha mụrụ otu nwa nwanyị, Elizabeth, na Jenụwarị 1961. Peter na Beverly biri na nwa ha nwanyị na Folger mansion dị na Woodside, California ruo 1974 mgbe ha kwagara n'ụlọ ọhụrụ e wuru na Roberta Drive. Ihe
ogbugbu e gburu ada ya nwanyị nke okenye, Abigail Anne, na Los Angeles, California, n'August 9, 1969, ka e kwuru na o belatara ọchịchọ Peter ịnọgide na-ebi n'ụlọ Woodside, ebe o toro.