Mortimer attended Dalton, the ritzy private school on the Upper East Side. He was a delicate child, with big eyes and a mop of dark curls, and some of his classmates made fun of him, because even by the standards of the 1980s the name Mortimer had a cartoonishly old-rich-guy ring to it. In the recollection of one student who overlapped with him at Dalton, “He just seemed innocent and mocked and friendless and rich.” And Dalton was a school for rich kids, “so to be ostracized on that basis, you had to be pretty fucking rich.”