All Saints church, Kingston upon Thames, baptisms for children born to Thomas Mansell and Abigail Mansell:
Abigail Mary Mansell 15 Oct 1843
Jane Mansell 8 Feb 1846
Thomas Mansell 16 Jul 1848
Charles Mansell 23 Mar 1851
Edward Mansell 26 Sep 1853
Louisa Mansell 19 Aug 1855
Sarah Mansell 7 Feb 1858
Deaths: Abigail Mansell, registered in 1862 in Kingston, in county of Middlesex/Surrey Volume 2a, Page 132 (This death would appear to match Abigail Galley as opposed to her daughter Abigail who seemed to live on and possibly marry in the 1870's).
HappyFeet,
I hope that Abigail had found happiness in her marriage. I could not find her anywhere in 1861. What an awful outcome for these two siblings; Edmund and his sister Abigail. Do you know what happened to Edmund in Australia? - apart from him being awarded £1,000 compensation from the British parliament.
I dont know whether you have access to UK records, but I've done my best to find some more positive findings for you regarding Edmund's siblings, but don't feel as I have managed to find any.
Please let us know if you still need help, and I hope others will also check for the siblings too in case I missed anything and continue to add advice / ideas that I may have missed.
Penny