Dimitry frequently traveled to Washington, D.C., where he met his wife, Mary Powell Mills. Mills was the daughter of
Robert Mills, a distinguished architect. He was from Charleston, South Carolina, and the designer of the
Washington Monument. The couple married in Washington, D.C., on April 5, 1835. In 1835, Alexander became the principal clerk for the Southwest Postal Department. He remained in this position for four years and several of his children were born in Washington. Alexander was a notable author and wrote for many different publications from 1830 to 1850 under the pseudonym Tobias Guarnerius. His son
Charles Patton Dimitry would later take on the name Tobias Guarnerius Jr. The U.S. Congress appointed Dimitry secretary of the commission sent to Mexico to settle disputes. His knowledge of the Spanish language and international law made him a valuable member of the commission. When he returned to Louisiana he established the college of Saint Charles Parish. He was dean of the college. Dimitry then became superintendent of the schools of New Orleans. Around this time, Alexander educated prominent Creole American author, poet, and translator
Mary Bushnell Williams.
Isaac Johnson Governor of Louisiana appointed Dimitry state superintendent of public education. Dimitry was the first person of color and the first incumbent of the office in Louisiana. The office organized the public school system throughout the state. He held this position from 1847 to 1849. In 1853, Dimitry's nephew
George Pandely ran for a seat on the Board of Assistant Aldermen, a municipal body responsible for urban infrastructure in New Orleans including streets and sidewalks. Victor Wiltz in
Pandelly v. Wilts (1854) seized on Pandelly's mixed-race ancestry to discredit his election, prompting Pandelly to take his opponent to court for slander. The case was dismissed, but the
Pandely Affair inspired later generations to invent a new genealogy for themselves in which they claimed descent from a mythical, possibly invented
Indian princess of the Alibamu tribe named Malanta Talla. After his service as superintendent Dimitry was called to Washington by
William L. Marcy. He was one of the clerks to the Secretary of State
William L. Marcy under President
Franklin Pierce. Dimitry was appointed to a commission to revise some treaties with American Indian Tribes. In 1855, he was appointed by the U.S. Department of State to translate diplomatic correspondences with different foreign governments. He was fluent in eleven languages. While he was at the State Department he lectured at Georgetown University. President Buchanan appointed Dimitry as United States minister resident of Costa Rica and Nicaragua in 1859. He was hired to settle diplomatic disputes. Dimitry was crucial because he spoke the native languages fluently he also made important speeches in Spanish at diplomatic functions. He was very knowledgeable about the conditions of Central America and Dimitry was about to obtain a treaty with Nicaragua but because of the secession of South Carolina on December 20, 1860, the negotiation ended. Louisiana also passed an ordinance of secession on January 26, 1861, one month later. Dimitry, concerned about his huge family in New Orleans and his state resigned from his position as ambassador. Secretary of State
William H. Seward expressed President Abraham Lincoln's discontent with Dimitry's decision when he returned to Washington. Dimitry turned down a yearly salary of $12,000 in gold. His son
John Dimitry was also a Greek-American Creole. He was extremely educated and worked with his father as the Secretary of Legation of Costa Rica and Nicaragua. ==Civil War==