Barbara F- Thank you for the reply
The 1911 census has Matilda aged 41 (Hoxton), Violet aged 10 (Hoxton), George aged 6 (Hoxton), Sidney aged 5 (Stoke Newington), and Leslie aged 2 (Stoke Newington).
I should probably also mention, Leslie's birth certificate has the surname 'Willis' as 'Willes' (and this is how it appears on sites like FreeBMD and others)- I can't think why, because all the details match up (date of birth, location, siblings); I suppose it was the registrar's error?
The birth certificate lists Matilda as 'Matilda Willes formerly Wilkes'. I ordered the certificate from the General Register Office (I think my uncle has the original) so I assume that means the birth was registered? I have traced Matilda's Wilkes family back a further 2 generations, but I am mainly trying to get the Willis line sorted out first of all (it's always been the most vague one). With regard to the 1901 census, I have found Matilda in 1871 and 1881, but nothing after that.
Thank you for your help so far.
Suzard- it may be coincidence, but there are a few things that strike me as accurate with that information... I'm not sure though. I definitely won't discount it though, I'll look into it. Thank you for that