Wallet
late Middle English (denoting a bag for provisions): probably via Anglo-Norman French from a Germanic word related to well2. The current sense (originally US) dates from the mid 19th century.
wiktionary
From Middle English walet(“bag, knapsack”), of uncertain origin. Possibly from an assumed Old Northern French *walet(“roll; bag; knapsack”), from Proto-Germanic *wal-(“to roll”). More at walk, well, wallow.
etymonline
wallet (n.)
late 14c., "bag, knapsack," of uncertain origin, probably from an unrecorded Old North French *walet "roll, knapsack," or similar Germanic word in Anglo-French or Old French, from Proto-Germanic *wall- "roll," from PIE root *wel- (3) "to turn, revolve." Meaning "flat case for carrying paper money" is first recorded 1834, American English.
