Shelbyville Manhattan

Shelbyville Manhattan was the founder of Shelbyville and former partner of Jebediah Springfield.

History
Their split occurred when Springfield refused to found a town where one can marry his or her cousin; Shelbyville considered cousins "so attractive". He thought the whole point of their journey to found a new town was for that reason.

Non-canon
A diorama depicting him is seen in the Springfield Museum of Natural History.