I have a list of the above surname dating back to c1742 to a Neil MacNeill. Placenames mentioned are:
Ardachy, Ardminish, Drumyonebeg (Gigha & Cara), Kilchoman (Islay), Campbeltown, Killean & Kilchenzie & mainland areas such as Glasgow & Fife further down the line.
These are derived from a family tree I was doing a while ago for someone who I have now sadly lost touch with & other's are as well to make use of the info. I have gathered to date.
You can send me queries and if I can link it with what I have I will forward my info.
If interested some of the names are (all surname MacNeill):
Alexander, Archibald, Barbara, Catherine, Donald, Duncan, Euphemia, Hector, James, Janet, John, Lachlan, Malcolm, Margaret, Mary, Neil.
Other surnames associated (through marriage) are:
Cathcart, Galbraith, McGeachy, MacTaggert, Ferrier, Laing, Marshall & Smith
A. M.