[1] The future mayor of Washington, D.C. was the nephew of Colonel Henry Carbery, a Revolutionary War officer and the first Adjutant General of Maryland.

He was president of the National Metropolitan Bank, one of the largest financial institutions in Washington (it underwrote the payroll of the entire U.S. Army during the War of 1812.

[7] During the 1820s, Carbery was a member of the prestigious Columbian Institute for the Promotion of Arts and Sciences, who counted among their members former presidents Andrew Jackson and John Quincy Adams and many prominent men of the day, including well-known representatives of the military, government service, medical and other professions.

Carbery married Mary H. Manning of Loudoun County, Virginia on November 2, 1826, but she died young in 1834.

[10] (Carbery also maintained an estate off Seventh Street Road (now known as Georgia Avenue NW) in the northernmost section of the District of Columbia that is now the Takoma neighborhood.

[11]) Carbery's sister, Ann Mattingly, who lived with him in her widowhood, became extremely ill in 1817 with what doctors diagnosed as an internal cancer.