1891 Census: RG 12 4350 81 10
18 North Street, Llanover, Blaenavon
Abraham Cales, Head, 1829, Gloucesterschire, underground labourer
Elizabeth Cales, wife, 1839, Monmouthshire
Charles Morgan, Son-in-Law, Widower, 1862, Abergavenny, underground mason
Abraham Morgan, grandson, 1888, Blaenavon
John Morgan, son (of Charles), 1886, Blaenavon
So, for Charles it is a second marriage to Mary Jane