Howsham, in the Yarborough Wapentake of Lincolnshire, is a simplex place-name from the dative plural of Old English hūs or Old Norse hús, both elements have the meaning ‘a house; also sometimes used of a building for special purposes’, so húsum ‘at the houses’. The weakly stressed -um was subsequently interpreted as -ham. This is a common formation in Denmark, so the place-name is likely Danish in origin.