"...William Francis Deegan was born in what is now the Bronx in 1882. Educated as an architect at Cooper Union, he was commissioned as a captain in the Army Corps of Engineers, where he served under the command of General George Goethals, the builder of the Panama Canal. During World War I Deegan spent no time in the trenches; instead he oversaw the construction of army bases in and around New York, rising to the rank of major before war's end. After the war, he helped organize the returning veterans into the American Legion and in 1921 was named New York State Commander.
Deegan was a devoted Democrat, a political leader, and a personal friend of Mayor Jimmy Walker...
In 1928 Walker appointed him the Tenement House Commissioner, what would today be called the Buildings Commissioner.
In 1930 Deegan was given the chairmanship of the Mayor's Committee on Receptions to Distinguished Guests...
Deegan was also elected President of the Bronx Chamber of Commerce...
Then Bill had to go and ruin everything by dying during an operation for appendicitis in 1932. His many friends launched a campaign to have the approach road leading from the new Triborough Bridge to the Grand Concourse named in his honor. After World War II, when Robert Moses pushed the original highway north along the Harlem River and through Van Cortland Park to connect with the New York State Thruway and upstate New York, "Deegan Boulevard" became the Major Deegan Expressway..."
http://www.straightdope.com/mailbag/mdeegan.html