Here are two surnames that haven’t appeared in either book or blogs. The reason they didn’t feature is because they are more common in places outside Cornwall and neither reached the number of 1861 household heads required for inclusion. Yet both were present by the middle of the 1600s and have a long history in Cornwall.
The first record I can find of the name Yeats is the burial of Arthur Yates at Boscastle in north Cornwall in 1627. From there this surname, more likely to be spelt Yeats in Cornwall than Yates, had by the mid-1700s dispersed to mid and west Cornwall. Over half the Yeats households were then found in the Wadebridge district of mid-Cornwall. By 1861 however, it had ramified in Camborne, a reflection of the population expansion there caused by the mining boom. As a result, the centre of gravity of the name in Cornwall shifted even further west.
Our second name – Watts – was present in large numbers at an earlier point, as early as the 1520s. It was then usually just Watt, with just a handful of parishes in east Cornwall showing the additional -s. By 1641 that had completely turned around, with only two Watt men listed (at Feock), the other 44 being Watts. The name was quite widely dispersed in Cornwall by the 1800s. However, it’s clear that it was most concentrated on the Isles of Scilly. It was present there in numbers in the 1730s. Lack of early records prevents us from deciding whether it was taken to Scilly from Cornwall, or arrived from somewhere else, or emerged independently.
Both names have generally accepted origins. Yeats is from the word gate, given to someone living by a gate or possibly to someone who was a gatekeeper. Watts is from the popular medieval first name Wat, a short form of Walter.