Mere age does not preclude a father from relating to his children. From all my father says he had a very happy relationship with his father, for all the 50 years between them (admittedly, they seem to have been quite similar in character and interests). When Dad was a teenager they used to share library books, and for years my father used to walk the dog to the tram stop to meet my grandfather from work for a little 'chaps' time' (with three girls, plus my grandmother, it was a somewhat female-dominated household).
Ann