Il avait une relation avec Catharina O'Dogherty.
Enfant(s):
The family tradition of the O'Neills of Martinique is that John also had a legitimate son Patrick, and that John and Patrick both fought with Owen Roe O'Neill in 1642; according to this tradition, Patrick married and settled in Ireland. The Martinique family claims descent from his son Henry, who emigrated at some time during the reign of James II.
https://en.wikipedia.org/wiki/Shane_O%27Neill_(Irish_exile)
Les données affichées n'ont aucune source.