No I'm not from TAS but my ancestors were.I too had some in chains but apparently not the Briggs.The Briggs I'm interested in particular are Benjamin b.1784 and Lydia b.1806 Briggs who came over to TAS in 1838-1840 (via Sydney I believe) and lived in Brighton.They brought with them at least 3 children - Sarah b. 1835, Elizabethb. 1832 and Mary Ann Briggs b. 1836.They may also have children - Hannah, Lydia and Johnathon.
I am also interested in Isaac Briggs and Alice Deane his wife.I believe they too came from Halifax and may have been Benjamin's brother and sis-in-law.
Thanks for spotting my message.Hope you may be of some help.