His brother's name is Victor, but I don't think his parents' names are... available?
David Sparrow is 48 years old (birthdate: March 4, 1962).
David A. Hargrave is 64 years old (birthdate: May 25, 1946).
David Franzoni is 63 years old (birthdate: March 4, 1947).
David Gittins is 64 years old (birthdate: March 4, 1946).