Princess Diana's surname before she got married was Spencer. Her full name before marriage was Diana Frances Spencer.
Diana Frances Spencer was born on July 1, 1961, in Sandringham, Norfolk, England. She was the fourth of five children of John Spencer, Viscount Althorp, and Frances Roche. The Spencer family is a prominent British aristocratic family that has been active in public life for centuries. Diana's father was heir to the Spencer earldom and her maternal grandmother was a member of the Roche family, an Irish aristocratic family.
When Diana's father inherited the earldom in 1975, the family moved to Althorp House in Northamptonshire. Diana attended boarding school in Switzerland and later in England. She met Prince Charles, the eldest son of Queen Elizabeth II, in 1977 and they began dating. They got engaged in February 1981 and married on July 29, 1981, at St. Paul's Cathedral in London.
After her marriage, Diana became known as Diana, Princess of Wales. She and Prince Charles had two sons, Prince William and Prince Harry. The couple separated in 1992 and divorced in 1996. Princess Diana died tragically in a car accident in Paris on August 31, 1997.