Clement C. Moore married Catherine Elizabeth Taylor in 1813, and they settled at Chelsea, in what was in those days a country estate outside New York City. He died in 1863 and was buried in the Trinity Church cemetery at 155th Street and Amsterdam Ave. 

The legend says that Clement C. Moore composed "A Visit From Saint Nicholas" (now better known as "'Twas the Night Before Christmas") in 1822 and that he wrote it as a Christmas gift for his two daughters, Margaret and Charity, during a sleigh-ride home from Greenwich Village. 
He supposedly drew inspiration for the elfin, pot-bellied St. Nick in his poem from the roly-poly Dutchman who drove his sleigh that day. 
It was anonymously published a year later.