Brevin's Quarterstaff

In The War at Home side quest, cheer up Jospil to get Brevin's Quarterstaff.

In-game description
"The soldier Brevin brought this quarterstaff from home when he first left to make his fortune. Once he earned enough money to purchase a better weapon, the quarterstaff wound up in a weapons supply in Candlekeep. At some point it was retrieved and enchanted, switching owners several times along the way."