Sorry John if I slandered you by mentioning New Jersey! I've usually found Google.com a good place of last resort.
So, how about Phil Kelly's Enmyn Ynnyd, Placenames, which is an excellent book.
He lists a LOUGHAN NY MAYNAGH in Michael parish. The name means MONK'S LAKELET, or, according to Juan Kelly's Manx Dictionary, the word MAYNAGH can mean, -
(1) A monk , or (2) Monkish, belonging to an abbey or any religious house.
So this could mean "the little lake belonging to the Abbey Lands" ??
He gives an example in BALLEY-VAYNAGH, meaning Abbot's land.
The word MAYNAGH could sound like "Manor" if the gutteral GH sound was softened.
Perhaps KNEEN'S Placenames might list this name and give a locality.
There must be many experts on the parish of Michael checking out this board. Perhaps some may recognise this place.