Kammala jumla mai zuwa: Ta auri Oscar Eugene "Gene" Mullen (Yuni 27, 1916 - Yuli 1986) a 1941 kuma ya zauna a gonar iyali kusa da La Porte City, Iowa, yana ƙara yawan kuɗin da ta samu tare da ayyuka a JC Penney da Santa Claus Industries. Ma'auratan suna da 'ya'ya biyar: Michael, Daniel (wanda ya mutu kwana biyu bayan haihuwar da aka yi), Patricia, Mary Margaret, da John Kevin. Peg Mullen ya kasance dan Democrat mai aiki wanda ya kasance wakili ne a Babban Taron Kasa na Democrat da aka gudanar a 1964,
1968 da kuma 1972. A shekarar 1972 ta kasance wakiliyar McGovern. A wannan shekarar an zabi ta a matsayin Uwar Shekara ta Iowa.