What is the first name of Frasier and Lilith's son?

The first name of Frasier and Lilith’s son is Frederick.

Frederick Crane is born to Frasier Crane and Lilith Sternin during Cheers’ eighth season. His birth is unusually chaotic: Lilith goes into labor in a taxi while returning home after being sent away from the hospital because doctors initially believed she was experiencing false labor. The character is later known by the nickname Freddy.

Frederick’s parents are both psychiatrists, and their relationship is one of Cheers’ more cerebral and combative romances. They live together, marry, and have Frederick before their marriage becomes strained. In the later Frasier storyline, Frasier and Lilith are divorced, and Lilith continues raising Frederick in Boston while Frasier lives in Seattle.

The name is easy to confuse with other members of the Crane family. Niles is Frasier’s brother, Martin is their father, and David is Niles’ son in the later Frasier continuity. Frederick is Frasier and Lilith’s child. His middle name, Gaylord, is revealed in the spin-off, and his first word is famously “Norm.”