Ivan H Plauchu considering the time and the location - what breed of dog do you think that is in the drawing?
The Alaunt Gentil, or as the Spanish named it, Lebrel de presa Alano, the Spanish Bulldog was not considered as a court dog, but, the Lebrel de Presa Alano (Alaunt Gentil).
I'd have to disagree, the gentil was a racier hound, as you see with the white dogs below-
I'd suggest if anything that dog being depicted is an alaunt boucheries, like a classic Alano espanol. Such dogs were crossed with greyhounds to make gentils, or bull lurchers as we know them today.
The Spanish Kingdon of Naples, use to ask to spain for Bulldogs (in this case, a straight translation of Alanos vaqueros), and Alanos Lebreles for their sports.