The posting by Malcolm Douglas of the Fiddler's Companion link appears to establish the tune in the 18th C. if not earlier, in Ireland. The Irish title seems to be Faíne Geal an Lae, Dawn of Day, not as I noted previously.

Pooka, the wedding dowry certainly was upped from the 100 pounds in the version I posted. Nowadays, with DNA as proof, the maid could sue for a hefty support allowance.