Tara,
I think these are the relevant records
1863 marriage –Ann Mordeaunt
1863 -birth of Sarah Jane Gaunt mmn Mordan
1865 - birth of Peter Gaunt mmn Mornington
1866 - birth of Elizabeth Gaunt mmn Mornington
1869 - birth of John Gaunt mmn Mornington
1861 2013/129/24
Cath Mornington with children, Mary and William
** where is Ann?
1871 2960/134/10
Catherine Mornington with daughter and son-in-law, Ann and John Gaunt.
Death 1874 - Margaret Catherine Mornington