I have a settler I assigned to be a general goods trader and I haven't seen him in weeks. I looked all around sanctuary, but I couldn't find him. I put him in a nice suit, so I'd know it if I saw him. I thought he may have gotten kidnapped so I started to grind through a few Minute Man quests to try and rescue him. Preston hasn't given me a quest to save him yet and I'm unconvinced I just can't find him. Any suggestions?

He may have been killed in a settlement attack