Hi Sabrina,
I think your theory that Giles and Jesse TREMBATH are the same person has merit. I live in Australia and am a descendant of Ann Trembath bn 1800 at St Just in Penwith. There are 2 couples who are likely candidates as parents for Ann:
(1) Ann Airs and Giles/Jesse Trembath
(2) Elizabeth Mathews and Emanuel Trembath.
Both couples had a daughter Ann baptised in 1800.
I'm also wondering whether perhaps Giles/Jess and Emanuel are brothers? Given that both have Hebrew names (Emanuel and Jesse) and born abut 1773 and 1772 respectively. Thinking baptismal records may not be available if the sons are baptised in a Methodist chapel and either not recorded or not kept!
Did your Eliza marry William Thomas and sadly pass away in 1848 after her arrival in South Australia?
My Ann married Joseph Hocking and they migrated to Australia with their 9 children also in 1848. Younger sister Jane Trembath who married Mark Hocking also migrated in 1847 (and also brother William Trembath).
Not sure if my Ann belongs to your family but thought I would share my opinion, even though it is 8 years since your post. Regards Janette
