Author, musician, and rabbi David M. Honigsberg died of a heart attack late on Tuesday; he was well-known in East Coast fan/pro circles for his stories and music, and had officiated at the weddings of a number of SFnal people. SFWA has an obituary.

I'm personally stunned; I saw David very briefly across a room at Lunacon a few weeks ago, and he seemed to have completely recovered from his heart attack last fall. I thought I'd be seeing him for many years to come. He was far, far too young to go like this.