There is really no info about the story of this mask. But it looks, from a little analysis of what is said about him in the various versions of this etching, that:
These are the commentaries that appear on different versions of this same image:
“Cochalino Innamorato qual,
Sfoga l'Ardor suo col
Canto verso la sua Diva”
“Cochalino in Love who,
lets out his Ardor with
Singing towards his Diva”
Cochalino becomes a little more daring in another version of the same image, offering money for a kiss:
“Colonna voi donarve un bel zecchin
Se quado mi ve fago un repeton
Abbandone delongo quel balcon
c'vegni a dar un baso a Coccalin”
“Colonna I will give you one nice Gold Coin
If when it comes I may repeat my song
Leave soon that balcony
and come and give a kiss to Coccalin”