Euphrosyne Mirth or gladness.
In unreproved pleasures = In innocent pleasures.
Then to come = Then (admit me) to come.
Corydon and Thyrsis. Names for a rustic couple taken from the mythology of the Latin poets. So Phillis and Thestylis.
Rebecks. Musical instruments like fiddles.
Junkets. Pieces of cheese or something of the kind.
By friar's lantern = Jack o' Lantern or Will o' the Wisp.
In weeds of peace = the dress worn in time of peace.
Hymen. God of wedlock.
Jonson. (See previous note to Ben Jonson.)