When marriage equality passed in New York last year, he married Shaun O’Brien, the celebrated character dancer with the New York City Ballet. They had been together for more than 60 years and died less than two weeks apart — Mr. Alexander on March 7 in Saratoga Springs, N.Y., at age 92; Mr. O’Brien on Feb. 23 at 86. They shared a Victorian house in Saratoga Springs.
“If there is a cause of death, it’s a broken heart,” his friend Jane Klain said in confirming Mr. Alexander’s death. “It’s as simple as that.”