I have just visited the genealogical library on Unley Road, and there is one book there on the family of Giles Abbott commercially printed and two by members dealing with the same family. The commercial publication is: Abbott Family History: Printed by Openbook Publishers now Openbook Australia 205 Halifax St Adelaide Ph 81240000. The book can also be gotten from Margaret R Abbott, 29 Mason St, Port Elliot SA 5212 or Peter S Abbott, 19 Collins St, Brighton Vic 3186 Fax 039 562 7291; email: firstname.lastname@example.org or email@example.com. On page 14, William aged 19 married Elizabeth on the 15 Sep 1823, Witnesses: Joseph Henman (Parish Clerk) & Charles Tredgold. P38 states that the family arrived in Adelaide from Tasmania on the 17 May 1838 on the Black Joe. It is believed that they migrated to Tasmania in 1827 on the Orclia (cl may a d) – Wm, Elizabeth, Henry & Possibly Mary Ann. P54 & p55 has Henry 1825 (no further record of him in SA, possibly returned to Tasmania); Mary (Mercy) 1827 – 1923; Elizabeth Hannah 1836 – 1913. Elizabeth Hammond was interred on the 25 Nov 1839 at the West Terrace Cemetery. In the 1841 census, William was at Encounter Bay with his Sister Mary and her husband John Lewin. William revisited Tasmania on the “The Mary’s” in 1842, and again in 1844-45. William remarried in 1845 Elizabeth Brown.
From the above, and the other sources Elizabeth is in fact Elizabeth Hannah (born in Tas), thus there is one person not two. She married Giles Abbott. They were most probably Farmers in Tas. Mary Ann married George Sword Turner in 1855
George Watson’s wife belongs to other Abbott family apparently not related to Giles (I have most of his connections in my database). Her parents are Joseph & Mary she was born in Workington England in 26 Oct 1810 (No other Information at this time). While I have close family ties with various Watson’s I have no connection yet to george, but they had twelve children: Joseph m Alice Thurza FLYNN (6 Ch), Kezia m Richard Rodda, Mary Ann, Elizabeth, John m Honoria WELCH (5 CH), Elizabeth m Hague, George m Jane Sanders, David m Emma Ratford, Jane, Mary, Abbott, Richard m Annie Hurn. So there is a fair chance of their descendents still being around.