*Millville - 1814 (92:114)
Presumably for a mill once loc. here; the former name of Brookville.
Zinkin, Vivian.
Place Names of Ocean County, New Jersey, 1609–1849. Toms River, NJ: Ocean County Historical Society, 1976, 126
Well, I suppose I could have surmised that without taking this book off the shelf.
The reference to source #92 is to
Iron in the Pines, which is in turn quoting the Martha Furnace diary, which mentions Millville in passing a few times.