 In 2014, he won the Henry Viscardi Achievement Awards.At age 37, McCallum married Mary Crock, a B.A., LL.B., and Ph.D. (Law) graduate of the University of Melbourne and its law school and now Professor of Law at the University of Sydney.They have two sons (Gerard McCallum and Daniel Clive McCallum) and a daughter (Kathryn McCallum).