The word is otherwise unattested and found in a book containing inventories of jewels, coins, accounts and other matters. Perhaps it could be related to ME
scapelen v.‘to rough-hew stone’, derived from the CF eschapeler.
s.
1stone-mason?:
(
1485-1509
)
Item le brocour avera pur brocage [...] Pain pur le sappler – .j. d.
E163/9/21,f.20v