Capt. William flavin and his wife Eliza D'Alton, both of Waterford, Ireland, had two children -- Catherine and Martin I. When Capt. Flavin died about 1850, Eliza and two children moved to New York. Martin worked there for awhile and then moved to San Francisco. He was married and had a son, Martin II, who was the Pulitzer Prize winning author of "Journey in the Dark." Martin II had three children, Martin III (now dead), Sean (an attorney in Monterey, Calif.), and Flavia (now dead).
Catherine Flavin (see above and sister of Martin I) was married to Leopold Vasserot Merle (they are my great grandparents). One of their daughters, Mollie Merle, married William V. Regan I. They were my grandparents, parents of my mother.
The martin seems to have been used often. To the writer of the message I am answering, is this the martin you are writing about?