me -> Dale Kelly, descendant of Scottish Royalty
you -> non-descript petty bourgeois American

O'KELLY is a genuine 'O' surname which belongs to the oldest class of
native Irish surnames. It means 'Descendent of Ceallach' (war or
contention), and is the name of several distinct and illustrious
families in various parts of Ireland. O'KELLY was chief of the great U?
Maine clan and ruled over an extensive territory in the counties of
Galway and Roscommon.

The O'Kellys of U? Maine derive their name and descent from Ceallach, a
celebrated chief in AD. 874 who was a descendant of Ciolla-da-Chrioch, a
prince of the royal House of Heremon in the 4th century.

Colla-da-Chrioch was the first King of Ulster after its conquest by the
Three Collas in the 4th century. He had three sons ; Rochadh, the
ancestors of the O'Kellys of Ulster; Imchadh, the ancestor of the
O'Kellys of U? Maine, and Fiacha Cassan, the ancestor of the O'Mooneys
of Ulster.

Ceallach was chieftain of Ui Maine for eighteen years from 856AD to
874AD when he was slain and was the fourteenth chieftain in descent from
Maine Mor.