I have a problem with knightly orders in 3.42. I joined the Kingdom of Ravenstern, became the marshal and won my first castle: Ironoak. When I got enough money, I founded the Order of the Dragon which was quite logical at the time since I could recruit Raventsern Nobles from my castle. Some time later, I conquered Windholm, got it for myself and founded the Order of the Falcon which was the only choice in the town. Next, I conquered Javiksholm and got that one for myself as well. Javikholm already had Lady Valkyries order founded. A little later, I declared independence and chose Pendor culture for my kingdom. I gave Windholm to one of my vassals and left on Javiksholm, Ironoak Castle and a couple of villages for myself. I wanted to dismantle the Lady Valkyiries in Javiksholm in order to replace it with the Order of the Falcon since I could only recruit Pendor Nobles now, but the only option in the town was the Lady Valkyries. Next, I tried to similarly replace my Order of the Dragon in Ironoak Castle with Order of the Falcon, but when I dismantled the existing order there were no options to found a new one. Actually, there was the option to found an order but there were no orders in the next menu.
What is happening in my game? What do I need to do to get the Order of the Falcon? Do I need another castle or town without an order or is it forever lost for me because I already founded it in Windholm?