No, Nancy Spitz cannot be a brother of Mark Spitz because she is female.
Mark Spitz swam for the US.
Michael Phelps (6 gold, 2 bronze)
Mark Spitz was born on February 10, 1950.
Mark Spitz is about 6' 1".
Mark Spitz is Jewish.
Mark Spitz participated in the sport of swimming.
It is not known what former Olympic swimmer Mark Spitz eats for lunch daily. Mark Spitz is a 9 time Olympic champion.
Mark Spitz is 67 years old (birthdate: February 10, 1950).