Ronald Reagan’s daughter, Patti Davis, says her mother, Nancy Reagan, convinced the former president to get married by getting pregnant with her in 1952, according to her upcoming book Dear Mom and Dad: A Letter About Family, Memory, and the America We Once Knew. Ronald Regan had been married to actress Jane Wyman before divorcing her, and according to Davis, had “made a pact” with Wyman that he wouldn’t remarry before she did. Davis wrote that her father was happy playing the field and “was not exactly anxious to get married again.” Davis was born six months after the couple...