I am researching the Lodge family tree from Dorset, I have gone back to James Lodge and his wife Susannah Stickley, they had 9 children all of which I can trace except Ann born 1843, she appears in the 1851 and 1861 census but then I can't find anything and there is no birth record either, her sister Elizabeth born 1849 appears in the 1861 census only and nowhere else, any ideas why I can't trace them or where I can go next?