Why did Ichabod come to Tarry Town initially, and what did he find he wanted after he arrived?

Ichabod cam to Tarry Town to be a teacher.

In this by-place of nature there abode, in a remote period of American history, that is to say, some thirty years since, a worthy wight of the name of Ichabod Crane, who sojourned, or, as he expressed it, “tarried,” in Sleepy Hollow, for the purpose of instructing the children of the vicinity.

After he arrived, Ichabod came to discover that the wanted the beautiful Katrina, and everything that came with her.... the house, the lands.... and the girl.

From the moment Ichabod laid his eyes upon these regions of delight, the peace of his mind was at an end, and his only study was how to gain the affections of the peerless daughter of Van Tassel.