Alfred came tot he Netherlands on November 18th, 1938 and lived with his aunt.
His parents were Emmy Pollack, born on 11.11.1897 in Ruthen, Lippstadt, his father was Rudolf, born on 27.01.1885 in Ahaus. They were deported to Riga on 13.12.1941, with Alfred's brother Mas (born 01.11.1929 in Ahaus). There was an older sister as well.
Source: National Archive, 2.04.58, inv 130 and others
Addition