Ka cika wannan magana: A ranar 30 ga Yuni, 1960, Peter ya auri sakatariyarsa Beverly Mater (b. 1935) da kuma 'yar'uwarsa. Suna da 'yar daya tare, Elizabeth, a cikin Janairu 1961. Peter da Beverly sun zauna tare da 'yarsu a gidan Folger da ke Woodside, California har zuwa 1974 lokacin da suka koma wani sabon gida da aka gina a kan Roberta Drive. Ƙungiyar
An ce kisan da aka yi wa babbar 'yarsa, Abigail Anne, a Los Angeles, California, a ranar 9 ga Agusta, 1969, ya rage sha'awar Peter na ci gaba da zama a gidan Woodside, inda ta girma.