1) A spelling of ‘asp’, that is the common aspen.
1449 ‘cut 1 espe in le Dybbe’, Yeadon
1548-9 ashes, esppys, hollynes and crabtrees, Shelf
1599 And in the Buckabottom hagge 24 Espe trees, Settrington. In this Settrington survey Espe Tymber trees were sold to the Inhabitaunts. The word occurs in minor place-names: 1438 ‘abutted on le Espgapp’, Thorner.