(23 December 1951 - 13 August 1995) (his death) (4 children)
On December 23, 1951, Mantle married Merlyn Johnson (1932–2009) in Commerce, Oklahoma; they had four sons. In an autobiography, Mantle said he married Merlyn not out of love, but because he was told to by his domineering father. While his drinking became public knowledge during his lifetime, the press (per established practice at the time) kept quiet about his many marital infidelities. Mantle was not entirely discreet about them, and when he went to his retirement ceremony in 1969, he brought his mistress along with his wife. In 1980, Mickey and Merlyn separated for 15 years, but neither filed for divorce. During this time, Mantle lived with his agent, Greer Johnson, who was not related to Mantle's wife.
The couple's four sons were Mickey Jr. (1953–2000), David (born 1955), Billy (1957–94), whom Mickey named for Billy Martin, his best friend among his Yankee teammates, and Danny (born 1960). Like Mickey, Merlyn and three of their sons became alcoholics, and Billy developed Hodgkin's disease, as had several previous men in Mantle's family.
During the final years of his life, Mantle purchased a luxury condominium on Lake Oconee near Greensboro, Georgia, near Greer Johnson's home, and frequently stayed there for months at a time. He occasionally attended the local Methodist church, and sometimes ate Sunday dinner with members of the congregation. He was well-liked by the citizens of Greensboro, and seemed to like them in return. This was probably because the town respected Mantle's privacy, refusing either to talk about their famous neighbor to outsiders or to direct fans to his home. In one interview, Mantle stated that the people of Greensboro had "gone out of their way to make me feel welcome, and I've found something there I haven't enjoyed since I was a kid."
Mantle's off-field behavior is the subject of the book The Last Boy: Mickey Mantle and the End of America's Childhood, written in 2010 by sports journalist Jane Leavy. Excerpts from the book have been published in Sports Illustrated.