Erse

He was the compiler of a polyglot dictionary in the Manx, Gaelic, and Erse languages.

—Is sept a word of Erse etymology; and, if not, of what other?

He never made the mistake into which so many have fallen of calling it “Erse.”

Erse, ėrs, n. the name given by the Lowland Scotch to the language of the people of the West Highlands, as being of Irish origin—now sometimes used for Irish, as opposed to Scotch, Gaelic.

It was no sight for young eyes, and I saw Steel shudder; but there was wild Erse blood in the girl, and, holding one arm up, she stood erect, facing us again.