Hi Sue
I am also interested in Ann Shirley, my husband is descended from her second marriage.
Looking on the New Zealand BDM's and there doesn't appear to be any children recorded for George and Ann however the following children are recorded for George and Hester:
1874 Petherick Piercy Godfrey
1871 Petherick Augustus John
1872 Petherick Godfrey
1876 Petherick Alfred Ernest
1865 Petherick Phoebe Minnette
1864 Petherick Augustus John
The following birth to George and Esther:
1862/4465 Petherick George Jennings
Searched Mary Ann and George and none registered born to a George
https://bdmhistoricalrecords.dia.govt.nzDo you have the divorce details for Ann and George?
Regards
Judi