Appleby, in the Manley Wapentake of Lincolnshire, is a hybrid name coming from Anglian æppel ‘an apple; fruit, tree-fruit; an apple-tree’ and Old Norse by ‘a farmstead, a village’. It is likely, from the situation of the village that this was formerly Appleton, in which the second element, originally Old English tun ‘a farmstead, village, estate’, was later replaced by by.