Joy was born in March 1952 as the second child and first son of Kuriachan Mutholath Kulappurath, Cherpunkal and Annamma Varkkamamthottiyil.
He married Susanna daughter of Paily from Neerolickal family in Nilampoor.
Children of Joy and Susanna are:
i. BIJU born in November 1974.
ii. BIJI born in September 1976.
iii. BINOY born in September 1979.