Wiktionary
maternal uncle
n. The brother or brother-in-law of one’s mother.
Usage examples of "maternal uncle".
After many pros and cons, and after a variety of consulting letters had passed between the various members of his family, it was decided that, as his maternal uncle, Sir Theophilus Blazers, G.
She learned that when he had finished his apprenticeship with a maternal uncle, he had been granted part of the credit needed to purchase the sloop, worked for the balance, and now owned her free and clear.
There she resumed her studies under the benevolent eye of her maternal uncle, Davy MacGregor, who would later be appointed Plane.