Hi James I cannot tie a Matilda into my line at the moment, doesn't mean she's not related, just I haven't found her yet. Do you have the marriage certificate? If so it should give her father's name, which would help. Free BMD list the marriage as March Quarter 1872 District Bethnal Green Volume 1c Page 615 They also have the birth of a Matilda Poulton which may or may not be her as March Qtr 1853 District Bethnal Green Volume 1c Page 238
I suggest that you send for the marriage certificate, if you don't already have it, & take it from there.