in Jun 2009 in the lengthy Thomas & Stevens of Zennor thread CT wrote "I think it will be worthwhile iinvestigating the families of Tremewan, Barnicoat and Wallis in the area of St Buryan and St Levan in particular to see what else might turn up."
Well I just found another:
Clarinda Barnicoat Wallis bapt 23 Feb 1817 St Buryan, father Richard Barnicoat. St Levan Bottoms, Mother Mary Wallish Trevilly Sennen
I think that her mother was probably the daughter of Francis Walllis and Alice (nee Nicholas) bapt 12 Jan 1795 at St Levan.
Her father was most likely Richard Trenerry Barnicoat - base child of Susanna bpt 2 May 1796 at St Levan
Clarinda married Richard George at Sennen in 1843.