John Tweedie (1775-1862) & family

[dorset_nomad]

Can anybody shed light on when John Tweedie (Botanist), his wife Janet and his family members actually left Scotland for Buenos Aires, Argentina? Vessel and names of who accompanied him would be very helpful. I believe one son (William King Tweedie) was left behind so it should be parents, five daughters and one son
The Rev. Dodds list says They all sailed on the Symmetry, departing Leith to arrive late 1825 yet Argentine arivals does not list them on that vessel. A footnote on Dodds list admits they might have arrived on an earlier vessel. The pax list for the two earlier vessels that year, Scotland to BA, does not show them either.