[1] The forms ending in -s show the addition of the genitive case ending, implying that the name-bearer was the child of a father called Hain, or addition of -s on the analogy of such names.
Additional etymologies for Haines and Haynes names not shared by the Hayne types are: The Oxford Dictionary of Family Names in Britain and Ireland also considers the suggestion of origins in the Welsh name Einws (a pet form of Einion), but does not find evidence to support this.
In 1881, there were 6890 bearers of the name in Great Britain, concentrated in the south of England, particularly in London, Gloucestershire, Berkshire, Wiltshire, and Warwickshire, while around the mid-nineteenth century bearers of the name in Ireland were concentrated in Cork.
[3] Haines is the 410th most common surname in Great Britain with 23,109 bearers.
Other concentrations include Merseyside, (198th, 1,727), Cheshire, (213th, 1,739), West Yorkshire, (245th, 1,751), Surrey, (281st, 1,815) and Essex (404th, 1,715).