I have not yet had an answer from Jan. However there are still two of his questions to be answered:
Adolphus van Beethoven married Mary Dixon in 1919 in Houghton, Durham. He was 40.
This is the last trace I can find of them.
Did they emigrate?, where did they die?
Any suggestions?
Dave

To update you,
Jan has answered my email and has now ordered all the 5 relevant certificates..
Dave