Hi Scrimnet
Not having much luck finding the lodge in Wood Green
I have checked Grand Middlesex Banner 1930
Grand lodge of England 1940
No lodges in Wood Green
I may be able to get a check on Grand Lodge England 1920 (after the weekend)
My guess he was in the Grand Executive Banner as they did have lodges in that part of town. The only problem is all their records were destroyed in a fire at Manor House years ago

I do have a few names of brothers that were founder members of lodges (but not many)
For him to pawn his jewels (brothers still use that excuse when they forget to bring their jewels to a lodge

) My guess is they were Grand Exec because if he was high up he would have been a knight & the jewel is worth a few bob, they see on ebay for over hundred pound now!

I will attach a picture of mine so you can see what I mean (its the large cross one)
I will keep digging for you!
What was his name?
Den