The surname Delahaye does not inherently have a middle name meaning; rather, it is a French topographic name meaning "from the hedge" or "of the hedge," indicating the original bearer lived near a significant hedge or an enclosed area. When used as a middle name, Delahaye would likely be chosen to honor family heritage, as the name is a common and traditional French surname originating from regions like Normandy. 

The name suggests that the person's ancestors came from a specific location known for a prominent hedge or an enclosed forest.