Meanings of family by marriage in English

Even the lieutenant governor was linked to one notorious family by marriage.

You see, the London Chaphills are related to the Wittelsbach family by marriage.

I have come into this family by marriage; you want to come into it in the same way.

One Dr. Midgley, an ingenious physician, related to the family by marriage, had the charge of looking over his papers.

He did not understand-bythe nature of things, he could not understand-howhard the folk of his family by marriage worked.

'Do you mean in the family by marriage?' he replied inattentively, and continuing to peel his egg.

"You are the oldest member of the family by marriage, Corky," said Jeff, and was rewarded by a venomous stare from his joint mother-and-sister-in-law.