Green’s Dictionary of Slang

gambolier n.

also gamboleer
[joc. blend of SE gambol + gambler]

(US) a gambler.

[US] in Dwyer & Lingenfelter Songs of Gold Rush 59: There was a noted gam-ba-lier a living in our camp [HDAS].
Night Side of N.Y 76: The gay gamboliers would sometimes set four and twenty hours at a stretch.
‘The Son of a Gambolier’ [lyrics] I’m a rambling rake of poverty / And the son of a gambolier.
[US]D. Belasco Golden West 319: See here, gamboleer Sid, you’re too lucky [HDAS].