Yes, thank you, Jennifer, these are her parents. I've found Mathew and Mary with five children.
There's some confusion over the birth name - I have Mary Catherine on the 1911 Census and everything else, but Mary Theresa on the birth record. (Born in Gravesend, 1906 Vol 2a 676 - from FreeBMD and confirmed on Ancestry.)
The marriage details just say Mary Polin.
Do you have any details of Frederick, Mary's husband, please, - such as was his second name Charles and was he born in 1912?