This passage is repeated in IV, I, 94:
At my depart these were his very words:
“Go tell false Edward, thy supposed king,
That Lewis of France is sending over masquers
To revel it with him and his new bride.”
Masquers were those performers who took part in a masque. As a rule they were gorgeously costumed. The performers were chiefly chosen for their agility and grace in dancing. In later years a dialogue was added to the masque, which the masquers took part in.
There are no theatrical allusions either in Part II or Part III of “Henry VI.”
HENRY VIII
THE PROLOGUE.