Henry Collins Flagg

Henry Collins Flagg Jr. (January 5, 1792 – March 8, 1863) was an American lawyer, newspaper editor, and politician. He was the grandfather of Alice Claypoole Vanderbilt.

Early life Flagg was born in the parish of St. Thomas, near Charleston, South Carolina on January 5, 1792. His parents were Henry Collins Flagg (1742–1801) and Rachel (née Moore) Flagg (1757–1839). Flagg's father, whose exact name he bore, served through the American Revolutionary War and was a wealthy shipping merchant from Newport, Rhode Island. Flagg himself was the younger half-brother of painter Washington Allston (1779–1843), from his mother's previous marriage to Captain William Allston, who died in 1781, shortly after the Battle of Cowpens.

Some of his early studies were pursued in Newport, Rhode Island. He graduated from Yale College in 1811.

About 1824, he returned to South Carolina, where he practiced law until 1833. Flagg's attachment to his native State was strong, but his devotion to the Union was stronger, and like his friend, James L. Petigru, with whom, side by side, he withstood the nullifiers in 1832, he was true to the last. Designing to educate his children at the North, he then again took up his residence in New Haven, where his home continued till his death. He practiced law until 1842 when he retired. From 1834 to 1839 he was Mayor of New Haven.

Personal life On March 20, 1811, Flagg was married to Martha Whiting (1792–1875), the daughter of William Joseph Whiting.

Henry Collins Flagg III (1811–1862), who married Olivia Moss Sherman (1816–1903).

Descendants Through his daughter Rachel and her first husband Abraham, he was the grandfather of Alice Claypoole Gwynne, who married Cornelius Vanderbilt II in 1867.

Through his son Jared, he was the grandfather of the American architect Ernest Flagg.