Purely by chance, I came across some interesting info about Victoria Louise's son Ernst while in London over the weekend.
Thumbing through 'The Truth About Rudolf Hess' by James Douglas-Hamilton, I found not only a photograph of Ernst in civilian clothes in the 1930s (I would guess that it was taken while he was at Oxford) but the information that in 1944 he was brought back from the Russian Front on suspicion of being involved in the July Plot and held in Moabit Prison and interrogated by the Gestapo. He pops up on the fringes of the Rudolf Hess saga because one of the protagonists was in Moabit at the same time and Ernst knew the Douglas-Hamilton family by virtue of having been at Oxford with one of the Duke of Hamilton's younger brothers. He obviously knew the family well enough for one of them to go and see him in Germany within weeks of the end of the war.
Unfortunately, I had no means of copying the photograph, but will do so when I lay hands on the book again.
Ann