SOLVED, thanks!

This appears to be the baptism of Jessie Mums on 14 February 1904 at Saint Faith parish in Stoke Newington. It's entry number 286:

• Record: https://www.ancestry.com/search/collections/1558/records/4098981
• Image: https://ibb.co/GQrK7zBR

The parents are listed as Frederick and Catherine. Can anyone find any other record of any member of this family anywhere?

There was a Frederick Mums born about 1872 who had a sister named Jessie, which seems like an incredible coincidence for such a rare name.