James Buchanan. Official White House biography of the 15th President with facts and life history. Not surprisingly, no mention is made of the rumors that this president may have been gay.
From the site:
Tall, stately, stiffly formal in the high stock he wore around his jowls, James Buchanan was the only President who never married.
Presiding over a rapidly dividing Nation, Buchanan grasped inadequately the political realities of the time. Relying on constitutional doctrines to close the widening rift over slavery, he failed to understand that the North would not accept constitutional arguments which favored the South. Nor could he realize how sectionalism had realigned political parties: the Democrats split; the Whigs were destroyed, giving rise to the Republicans.
Born into a well-to-do Pennsylvania family in 1791, Buchanan, a graduate of Dickinson College, was gifted as a debater and learned in the law.
He was elected five times to the House of Representatives; then, after an interlude as Minister to Russia, served for a decade in the Senate. He became Polk's Secretary of State and Pierce's Minister to Great Britain. Service abroad helped to bring him the Democratic nomination in 1856 because it had exempted him from involvement in bitter domestic controversies.