Complex sentence: He and his wife also became part of Clan Bran, a clan of eclectic practitioners based in Abbots Bromley, Leicestershire, before it moved to the Republic of Ireland.
Split into simpler sentences: He and his wife also became part of Clan Bran, which is a clan of eclectic practitioners. It was based in Abbots Bromley, Leicestershire before it moved to the Republic of Ireland.