High Quality Content by WIKIPEDIA articles! Aristobulus of Britannia (Full title, in Greek: Aghios Apostolos Aristovoulos, Martyras, kai Protos Episkopos Vretannias; Welsh: Arwystli Hen Episcob Cyntaf Prydain; Latin: Sanctus Aristobulus Senex, Apostolus, Martyr, Episcopus Primus Britanniae; English: Saint Aristibule the Old, Apostle, Martyr, and First Bishop of Britain. Also, Aristobulus, Apostle to Britain) is a Jewish Cypriot saint, numbered among the Seventy Disciples. Along with the Apostles Urban of Macedonia, Stachys, Ampliatus, Apelles of Heraklion and Narcissus of Athens he assisted Saint Andrew. St. Aristobulus was also the brother of the Apostle Barnabas. He preached the Gospel in Britain as its first bishop. Previous to this, he preached the Gospel to the Celts of Northern Spain, i.e. Celtiberians, whilst on his way to Britain. His feast days are celebrated on March 16, on October 31 (with Amplias, Apelles, Stachys, Urban, and Narcissus), and on January 4 with the Seventy. Such was the Apostle Aristobulus` acclaim amongst the Brythonic Celts that a region was named after him, i.e. Arwystli, which later became a small medieval British kingdom, and continues to this day as a district, or more precisely, a cantref within the county of Powys, Wales.