Ada Coumbe's husband

That would be William Andrew Sleeper.  So using the 1939 Register, Ancestry searches, and FindMyPast, I have developed a tree identifying nine Sleepers as listed on the Register - and a still as yet unidentified redacted person who may or may not be a Sleeper. Whoop! Whoop!

The tree is public and searchable on Ancestry as Sleeper Ada Faversham Kent.  Here is a screenshot with the possibly still living persons redacted.  If you click on it, it will come up bigger.  Still a bit fuzzy, but you can read the other names.

Not a deep tree as I've only gone back to William's grandfather George, but I have gone through his son William Benjamin Sleeper to child that could just be a grandson.

There are the other two lines to follow as well, if I can sort them out.  One of what might be a sibling to William (a redacted name on the Register which I have yet to figure out), UPDATE! (19 Dec '25) this is definitely a sibling to William as confirmed by a grandson of William's sister.  Unfortunately, I do not yet know if the eighth child is male or female. 

 and another one who might be a child of his brother Frederick John Sleeper, as hinted at by the redaction tape over several lines of the children of the soldier section.  

The Pauline A Smith (later Sleeper) on the Register in Faversham with Ada, is Frederick's wife in the tree.