Complex sentence: Trasmoz origin can be tracked back to the 12th century, when the lordship of Trasmoz was founded, it alternatively belonged to the Kingdom of Navarre and the Kingdom of Aragon until Jaime I, king of Aragón, definitively conquered it in 1232.
Split into simpler sentences: Trasmoz origin can be tracked back to the 12th century, when the lordship of Trasmoz was founded. It alternately belonged to the Kingdom of Navarre and the Kingdom of Aragon until Jaime I, king of Aragón, definitively conquered it in 1232.