The story of his marriage to Ilona Kinczel, according to the paperwork we found on NAA:
11 May 1969 – Ilona arrived in Sydney first, alone. She had arranged her visa through a migration scheme a year earlier. On this scheme she claimed to be single and agreed she was not going to make applications for visas for her parents or a potential fiancé.
24 May 1969 – WW arrived in Aus on a 3 month temporary visa. He also claimed to be single.
26 May 1969 – WW applied for residency in Aus due to that he was actually married to Ilona before each arrived in Sydney on the 10 May 1970 in Belgium.
They allegedly stayed in Aus for 11 months.
15 Feb 1970 – they both departed on the same flight to Belgium on , now claiming to be divorced.
Jan to Mar 1970 – Yet somehow, he claims he met his wife DW on a ship departing Southampton UK that arrived in Sydney 3 months later.
Please let m know if I got anything wrong.
This might also be why he's trying to change the date to his marriage with Ilona. You'll notice he couldn't have met DW on that ship if he was still with Ilona in Sydney! Also, his marriage to Ilona was very likely a scam to get residency.