The Descendants of Benedict Arnold

Arnold's treason was not looked upon in England as Americans viewed it. He was regarded as a man who had repented of his error and had returned to the allegiance of his king.
Arnold m. first in early life, ~ Mansfield, who died at New Haven about 1775. By this marriage he had three sons:
1. BENEDICT, who is described as a violent and headstrong youth,
held a commission in the British army, and d. in the West Indies.
2. RICHARD, was a merchant; a lieut. of cavalry, in the American Legion in 1782, commanded by his father, and his history down to 1829, is identical with that of his brother Henry. It is believed that the store at St. Johns was burned to obtain a fraudulent insurance; is supposed to
have died in Canada. (Sabine's Loyalists.)
3. HENRY, was a merchant; joined the king's service after his father's
treason; was lieut. colonel of cavalry in the American Legion and accompanied his father to St. Johns, where he was in business; his store
was burnt on a night when he slept in it, yet was thought to have
been fired by his own hand; afterwards resided in Troy, N. Y.; went to Canada, where in 1829, he was reputed rich; receivedd half pay, and a grant of lands from the British government, and is supposed to have died in Canada. (Sabine's Loyalists.)

Arnold married 2d, April 8, 1779, Margaret, dau. of Judge Edward Shippen of Penna., and d. in 1801, having had issue as follows:
4. EDWARD SHIPPEN, lieut. 6th Bengal Cavalry; paymaster at Muttra;
d. at Singapore, India, Dec. 13, 1813.
5. JAMES ROBERTSON, b. in the U. S.; an infant when his father fled
from West Point; in. Virginia, daughter of Bartlett Goodrich, of Saling
Grove, Essex, which lady d. July 14, 1852; he entered the British
army, was col. of eng. and was stationed at Bermuda in 1816-18, and
at Halifax in 1818-23; was lieut. gen. K. H. and K. C., and aide-camp to Queen Victoria; d. 1834.
6. GEORGE ARNOLD, lieut. col., 2d Bengal Cavalry; m. Anne Brown; d.
in India, Nov. 1, 1828.
7. WILLIAM FITCH, the only one of his sons who left issue, was born
June, 2.5, 1794. He was a captain in the 19th Lancers, and married
May 19, 1819, Elizabeth Cecilia, only daughter of Alexander Ruddach,
of the island of Tobago, captain in the Royal Navy,

Hough, Franklin Benjamin. 1875.  American biographical notes, being short notices of deceased persons, chiefly those not included in Allen's or in Drake's biographical dictionaries, gathered from many sources, and arranged by Franklin B. Hough.