Thomas D'Alesandro III, the eldest brother of House Speaker Nancy Pelosi and former mayor of Baltimore, has died Sunday October 20 2019. He was 90. Known as "Young Tommy," D'Alesandro came from a Maryland political dynasty. He was the son of Thomas D'Alesandro Jr., who served as a U.S. congressman from Maryland and later as Baltimore's mayor for 12 years. His youngest sibling and only sister, Pelosi, was the first female House speaker and is now in that role for a second time. D'Alesandro served in the U.S. Army before entering politics on the Baltimore City Council, eventually becoming its president. He was Baltimore's mayor for one term, from 1967 to 1971. He chose not to seek a second term, and practiced law after leaving politics. D'Alesandro is survived by his wife Margaret, five children and 10 grandchildren.