Yago. See - Jago.

Yarner -

Yarr. Quaker origins. They were in Co. Antrim in the north - east of the Ulster Province in the second half of the 17^th Century AD. May also be an abbreviation of Yarrow?

Yeats or Yates (dweller by the gate) They were originally in Co. Dublin in mid - eastern Leinster and later in Co. Sligo in the north - west of the Connacht Province at the end of the 17^th Century AD. There are many unconnected families of this name.

Yore. They were in Co. Meath in north - east Leinster.  

Yorke. English origins. They were in the Ulster Province.

Yorke. Used by an Irish Sept in the Connacht Province and the west of Leinster Province where it replaced Mac Engarky or Mac Ingarke, which see. Irish / Mheic Conchearca (The hound or warrior of Cearc.)

Young. Used as a translation for Og / young.

Young. They were in the Ulster Province.

Yourell or Eurell or Uriell /  de Oirghiall - Irish toponymic / of Orghialla / Airghialla / Oriel - the Heremonian Ui Cobhthaigh Dal Cuinn 3 Colla kingdom in Co. Louth in the north - east of Northern Leinster and Southern Ulster. They were later in Co. Westmeath in south - east of Northern Leinster.