For background on how the map was made (and its flaws), see the relevant blog entry.
|MacWhinney||fairly rare: Down etc. Ir. Mac Shuibhne (SI) i.e. equivalent of Mac Sweeney, but Black states that it is a Galloway form of Mac Kenzie, Scots Gael. Mac Coinnich. See also Mawhinney.|
|Mawhinney||numerous: Ulster generally, especially Antrim-Down. Ir. Mac Shuibhne, from first name Suibhne (pleasant), so synonymous with Mac Sweeney. It seems to be a Scottish name from Galloway, where there is some confusion with Mac Kenzie. MIF & SS.|