Nathan Marcus Adler
Rabbi Nathan Marcus HaKohen Adler was the Orthodox Chief Rabbi of the British Empire from 1845 until his death.
A kohen by birth, Rabbi Nathan was born in Hanover, in presentday Germany. He was apparently named after the kabbalist Nathan Adler . His distant relative Jacob Adler, who made his acquaintance in the winter of 18831884, described him as the highest religious authority not only of London Jews but of all Orthodox Jews throughout the United Kingdom and the Empire. He subscribed to what was known as the Frankfurter Orthodoxy.
Source: Wikipedia