I am confused by this - easily done I know.
William and Isabella arrived in Australia on the Aurora...
But they appear to have left on the Ann Lockerby, with daughters Agnes and little Isabella....
From London, yesterday, whence she sailed the 19th August, the ship Ann Lockerby 365,tons, Captain Watson, with merchandise Passengers Mr. John William M'Curdy, Mr. William Kennedy, Mr. Cockburn, and Mr lohn Levey in the cabin, steerage-Joseph Brook, Mrs. Brook, Louisa Brook Ann Holt, Archibald Cameron, Mrs-Cameron William DouglasŤ, Mrs. Isabella Douglass, Agnes and Isabella Douglass, Louisa Scott, John King (shepherd), lohn Arnold, (ditto). Robert Hart. Mrs. Hart ,Thomas Stewart (tailor), Mrs. Stewart, and two children, William Pott, Charles Bray, and James Schofield
Argus 24th December 1836
William Douglas
www.douglashistory.co.uk