For background on how the map was made (and its flaws), see the relevant blog entry.
|Ardill||rare: Ulster & Leinster. Possibly from MacArdle. Ir. Mac Ardghail.|
|Cardwell||numerous: E Ulster. English, synonym of Caldwell, q.v. Also Ir. Mac Ardail, SGA.|
|Mac Ardghail||rare: scattered. Ir. Lang. See Mac Ardle.|
|Mac Ardghail||Mac Ardle: líonmhar: deisceart Uladh & tuaisceart Laighean .i. Oirghialla - dúiche lenar bhain siad riamh. Gaolmhar le Mac Mathúna. Brí: ard-ghaisce.MIF & SGG.|
|MacArdle||Very numerous. Armagh-S Down-Monaghan-Louth-Meath etc. Ir. Mac Ardghail, "high valour". A sept related to the Mac Mahons of Oriel (Armagh etc).MIF.|
|MacCardell||Very rare: Down. See Mac Cardle.|
|MacCardle||rare: Down etc. Ir. Mac Ardghail (high valour). They were related to the Mac Mahons of Oriel. See also Mac Ardle.|