Gilbert Gilbart Family of St Erth

I am looking for the descendants of John Gilbert / Gilbart died 1837 ages 76 at St Erth. He married Elizabeth Huthnance (1774-1847) and they had 13 children.

Some of these children emigrated to Austrlaia - in particular:
*Mary (1805-1867) who was married to Thomas Edwards (1794-1871)
*Sarah (1808-1854) who was married to Francis Tuckfield (1808-1865)

I would be delighted to make contact with any fellow researchers.