Here are two more cornets captured from the Royalists at the Battle of 1st Newbury.
The motto (Dona dei utraque regi) means 'Both gifts of god are for the king'. The two gifts are the crown and the wreath of victory.
The motto means 'Square in every way'. The source for this cornet is a book from 1655 by Thomas Blount, titled The Art of Making Devises'. According to Blount the bearer of this cornet was probably proclaiming his hatred of anything to do with roundheads. Which is a bit naff.