A tree on Ancestry has Matilda Mary Luff as the daughter of Richard and Charlotte nee Barnicoat and that she is the one married to Henry Wilson.
If that was the case - Henry Wilson should be shown as their grandson in 1851 - but the image clearly describes him as their nephew
The tree also has this incorrect information and shows her 1844 death in Guernsey
She married Henry Wilson in 1844 in Guernsey.