Ernst came to the Netherlands on March 28th, 1939. He stayed in Rotterdam, and The Hague before moving to Wieringen. He was not a Zionist and trained in agriculture.
His mother had been working in The Hague for 8 years.
His father's name was Hans: he was born in 1897.
Source: National Archive, 2.04.58, inv. 130 and others.
Addition