Complex sentence: He spent some time in Auckland where he set up a centre for drug addicts acting on the same principals as Alcoholics Anonymous, however in 1969 he had adopted a Maori name (Hema) and taken residence in Jerusalem.
Split into simpler sentences: He spent some time in Auckland where he set up a centre for drug addicts acting on the same principals as Alcoholics Anonymous. In 1969 he had adopted a Maori name (Hema) and taken residence in Jerusalem.