water of Kelvin 1588 Charters and Documents, i, p.2, 96
mill on Kelvin 1595-6 Charters and Documents, i, p. 2, 114
Kelvinghauch, water of Kelving 1591-2 Protocols of the town Clerks Glasgow, 3315
Kelvin 1641 Acts of the Parliament of Scotland [1641/8/390]
water of Kelving 1661 Acts of the Parliament of Scotland [1661/1/288]
Kelvin, apud Kelvin, Kelvine x3 1666 Charters and Documents, cxxxvi
water of Kelving 1666 Charters and Documents, cxxxvii
The name Kelvin is almost certainly of British origin, although its precise derivation remains obscure. Some etymologies suggest the final -in represents abhainn but this does not fit the old forms, the current pronunciation or the expected syntax. The forms ending –ing could well suggest a termination representing Gaelic –inn.