Long ago Aragón was a Frankish feudal county Jaca before becoming a self-proclaimed kingdom, which was united with the kingdom of Pamplona (later Navarre) in 925. The kingdom of Pamplona included the counties of Aragon, Sobrarbe, and Ribagorza, and the duchy of Castile. After King Sancho's death, the kingdom was divided between his sons. Ramiro I was initially named king of Aragon; later, after his brother Gonzalo's death, he was also named king of Sobrarbe and Ribagorza. The new kingdom grew quickly, and incorporated Navarra. This kingdom conquered the city of Zaragoza in 1118. Split from the kingdom of Navarre, the kingdom of Aragón was re-established in 1035 and lasted as a separate kingdom until 1469 when Ferdinand the Catholic married Isabella of Castile, making the Kingdom of Spain.
temproraily Aragon owns Barcelona and Zaragossa from the beginning.
Sons: Peter, Alfonso, Ramiro
Princess: Maria (fictional)
Guard Spearmen (pike)
Sword and Buckler Militia
Dism. Aragonese knights
Ploma militia ---- Not decided yet
Armats (heavy cav, like chiv knights)
Crossbow Alforrats (m. crossbowmen)
Knights of Montesa
upgraded Knights of Montesa
Knights of Santiago
Mercenary Man at Arms (Occitan Routiers)
A BIG Thanks goes to Yuiis, M2 Junky and numerosdecimus who helped with their very good historical research!
Note that this is only a preview, so I'm still interested in any suggestions!