Complex sentence: King Inigo Iniguez Aritza (Iñigo Iñiguez Arista--in Basque, Eneko Aritza) was the first King of Navarre, Spain, and the House of Aritza was the ruling house of the Basque Kingdom of Navarre from 824AD to 1234AD.
Split into simpler sentences: King Inigo Iniguez Aritza (Iñigo Iñiguez Arista--in Basque, Eneko Aritza) was the first King of Navarre, Spain. The House of Aritza was the ruling house of the Basque Kingdom of Navarre from 824AD to 1234AD.