From Ex illis wiki
Cornwall’s army is led by Roger Mortimer, a young English knight who obtained the earldom after proving his bravery during the Battle of Basingstoke. In fact, Gaveston, Prince Edward II’s favourite, never forgave him for taking his earldom away from him. Mortimer therefore withdrew to his lands as soon as it was announced that Gaveston was returning after spending several years in France as an exile.
Mortimer must also protect Isabelle of France, Edward II’s wife, who ran from the court’s debauchery and took refuge in Cornwall. Her presence fuelled the malicious gossips since she is now pregnant. And if some people swear that the child is the legitimate heir to the throne, others rather believe he will be nothing more than a bastard, the fruit of Isabelle and Mortimer’s love. The young princess’ presence does not help in any way the tensions troubling the earldom, dividing the people and the Anglo-Norman lords. Indeed, the Cornish population, of Celtic heritage, wait for a saviour sharing their origins who will rebuilt Cornwall’s kingdom and get rid of the Norman invaders who are in power since William of Normandy conquered England a few centuries ago.
Mortimer therefore attempts to rally Cornwall’s people under his banner, promising them the earldom’s independence. He will need men to emerge victorious against Gaveston’s army which is getting closer day after day.
Cost to promote to Baron: +30%
Anglo-Normans: French and English units gain 10% in Toughness.
Knightly Traditions: 75% less penalty points are imposed to Franc Chevalers exceeding in any Muster Category.