Evan Jones / Elizabeth Nixon married 1849 Liverpool

[garstonite]

Hiya ..Wendy in South Africa and myself have this couple as our 3 x g grandparents...Lancsbmd has Elizabeth Nixon to Evan Jones ...
the trouble is that Wendy has found A TREE that states Elizabeth was
Elizabeth Ryley Nixon ...Wendy has found her christening record
Elizabeth Ryley Day Nixon christened 22nd february 1835 at St John the Baptist,Liverpool
Evan Jones died in 1861 and Elizabeth then married William Rigby ..
the tree that Wendy found has - RIGBY Day Elizabeth died 3rd May 1907 in Garston Hospital..freebmd has RIGBY Elizabeth Day aged 71 june qtr 1907 West Derby ,Liverpool (Garstons registration District ) so that looks to be right ..but ...all this info leads Wendy and myself with one conclusion ..
was Elizabeth Nixon on her 1849 marriage to Evan Jones just 14 years of age ??? 1841 census has her aged 10 with parents Robert Nixon and Elizabeth in Toxteth ,Liverpool..but b 1835 died aged 71 in 1907 all fits ??
Would Elizabeth Day Rigby death cert have her mothers name on it ??
thanks for reading , and I would appreciate peoples thoughts ...Wendy LF and I are sceptical about this tree which goes back with our supposed 4 5 and 6 G GRANPARENTS ...if it`s genuine ...LOL
thanks
allan