Master Robert Athelstan Marr

He m. Mary LaVallette, 6 Apr 1850.

Herringshaw's Encyclopedia of American Biography of the Nineteenth Century. pg. 617

“MARR, ROBERT ATHELSTAN, naval officer, was born April 18, 1823, in Warrenton, Va. In 1840 he was appointed midshipman in the United States navy, and served under Commodore Perry on the coast of Africa. He took part in the Mexican war, and fired the first shot in the naval attack on Vera Cruz. In 1854 he was appointed master. He was lost in the Caribbean Sea with the entire crew of the United States sloop of war Albany, in October 1854.”

Note: The rank of Master was a commissioned officer rank from 1837 until it was replaced with the current rank of lieutenant, junior grade in 1883.