The Boulonnais is a heavy horse breed originating in the Boulogne-Calais hinterland in northwest France. There is evidence that these noble horses trace ancestry back to the Numidian cavalry that encamped on the Boulogne coast before Julius Caesar’s invasion of Britain in 55-54 B.C. By the 14th century these horses were crossed with heavier German horses of Mecklenburg to be able to carry the weight of the heavier armor needed for that of a warhorse. During the Spanish occupation in the 16th century there was an infusion of Spanish blood. In the 17th century these horses were named Boulonnais and two types of this horse emerged.The smaller Boulonnais , which was also known as the mareeur or mareyeur, was quick and agile and was used for transportation of fish to Paris. It is doubtful whether this smaller Boulonnais version still exists today. The larger Boulonnais stands on average about 16.2 hh. These large horses are swift and energetic and are noted for their stamina and maintaining speeds for long periods of time. The Boulonnais is still used today in harness, however they are mainly used as a source of meat.