Let me see if this is another example:
A piece of a saint's (?Francis?) cloak was kept in a small room off the main sanctuary of the church. The room took on the name capella from the Latin for cloak and was Anglicized to chapel. Now a is a small space for worship is often called a chapel. The word is not an eponym because it is not named after a person but a piece of clothing - a thing.

I am not sure there is a term for such words.

St. Martin, that's the owner of the cloak. Well, was the owner.

Last edited by Zed; 06/08/11 04:37 AM.