(24 April 1954 - 01 February 1966) (divorced) (4 children)
She met English actor Peter Lawford through her sister Eunice in the 1940s. They met again in 1949, and again in 1953. They courted briefly and officially announced their engagement in February 1954. They married on April 24, 1954, at the Roman Catholic Church of St. Thomas More in New York City, twelve days before her thirtieth birthday. They settled in Santa Monica, California, and often socialized with actress Judy Garland and her family. Garland gave birth to her son Joseph at the same hospital and on the same day Kennedy gave birth to her son Christopher.
The couple had four children, all born in Santa Monica, California:
Christopher Kennedy Lawford born March 29, 1955 (age 58), has three children
Sydney Maleia Kennedy Lawford born August 25, 1956 (age 57), has four sons
Victoria Francis Lawford born November 4, 1958 (age 55), has three daughters
Robin Elizabeth Lawford born July 2, 1961 (age 52), has never married or had children
Despite the glamorous persona Lawford presented, their relationship suffered strains as early as their brief engagement. Lawford had difficulty adjusting to Kennedy's steadfast Catholicism and her family's larger-than-life image. Kennedy could not tolerate Lawford's heavy drinking, extramarital affairs, and gradual addiction to drugs. Shortly after her brother Jack's death, Pat filed for a legal separation, and the couple were officially divorced in February 1966. She never remarried.