Green’s Dictionary of Slang

a newly married man.

1592		Greene Quip for an Upstart Courtier B: It was iust at that time when the Cuckoulds chorister began to bewray Aprill Gentlemen with his neuer changed notes.
[1599		Greene George-A-Greene C3: kend.: We are gentlemen [...] how art thou a gentleman? [...] ienkin: Marie my master giue for his armes, The picture of Aprill in a green ierkin, With a rooke on one fist, and an horne on the other].