c1300 4511 Ded buth my prynces be atour.
a1500 (1870) 1775 And mor atour he shall Have O thing.
1725 A. Ramsay iii. ii. 37 By and attour..twa Quey Cawfs, I'll yearly to them give.
1796 R. Burns in J. Johnson V. 442 Bye attour, my Gutcher has a hich house and a laigh ane.