You're pretty close on the first two.
For the first one, I would just change [NAME] to "Lord [NAME]" or "Mister [NAME]" to add more to the character's style. Also, さきにいかれよ is far more forceful. So I'd make it something like "Go on without me!"
For the second one, it's "He came through here earlier".
The third one is a bit more complicated.
"What? Oh, Shibaraku? He left earlier. I told him I was looking for Wataru too, but...
Since things seem dire, I'll let you use this boat."