Mars Callahan's birth name is Gregory Mars Martin.
Mars Callahan was born in 1971, in Studio City, Los Angeles, California, USA.
Julius Callahan is 6'.
Matthew Callahan is 6'.
Alice Callahan is 5' 7".
Andrew Callahan is 5' 11".
Chrystal Callahan is 5' 8".
Gerry Callahan is 5' 6".
Krista Callahan is 5' 1".
Marlene Callahan is 5' 2".
Nikita Callahan is 4' 11".
Pepe Callahan is 5' 8".