What does "upright man" mean?

The leader of a group of thieves or vagrants.

Upright man

noun

noun ·Rare ·Advanced level

Noun

1
The leader of a group of thieves or vagrants. UK, archaic
"I hope then you can cant, for by your cudgels, you sirra are an upright man."
2
Alternative form of upright man. alt-of, alternative
"The Upright Man, the chief of the crew, arose from his chair, donned his gown of state, a very ancient brocade dressing gown, filched, most probably, from the wardrobe of some strolling player, grasped his baton of office, a stout oaken truncheon, and sallied forth."
3
Used other than figuratively or idiomatically: see upright, man.
"Later He gave him freedom from the Lord to live alone as an upright man to cultivate and keep His garden called Eden."

"I hope then you can cant, for by your cudgels, you sirra are an upright man."