A biographical datum is a piece of information about a person's LIFE. The crossword solutions for the term biographical datum are AGE (3 letters), GOLDA (5 letters), AUTO (4 letters), and LIFE (4 letters). AGE refers to the number of years a person has been alive, GOLDA is a reference to Golda Meir, the fourth Prime Minister of Israel, AUTO is a reference to an autobiography, which is a written account of a person's LIFE, and LIFE is a reference to the length of a person's LIFE.