At least some content in this article is derived from information featured in Fantastic Beasts: Cases from the Wizarding World. Spoilers will be present within the article.
Mr Fawley was a wizard. He had at least one child, a son, Eustuce, to whom he gave his best set of gobstones to take to Hogwarts School of Witchcraft and Wizardry. Eustace lost the gobstones in a fire at the boathouse.
Fawley is a name derived from the Old English word fugelere which means "hunter of wild birds, fowler".