Janet, I agree about the disparity in accents of QV's grand children! It is most interesting to see that the Edinburgh girls spent most of their formative years in England, yet having a Russian mother may have given some, like Ducky a subconscious lilt in that direction. The guttural edge in her voice is rather interesting too! Was it not the Edinbughs who had the gruesome German Governess and tutor? I seem to remember reading about incidents involving these two unpleasant figures in Zeepvat's QV's family....I shall be able to check this next Friday when my precious goodies finally arrive from storage! Perhaps I am wrong on this and it was another branch of the family!
Anyway, I wonder if with a German mother, the Connaught children may not have had quite inflected English accents or if their German may have been instead, whilst the Hesse sprogs having grown up in Germany and spent quite a lot of time in England may have had inflections that differed too! Listening to Willie 'grouching' about America's entry into World War One...I was rather struck by how English he sounded, though his intonation made it clear he was not a native to my ear anyway!
As to the Wales children, Georgie sounds thoroughly english as would be hope! But having a Danish mother whose accent was well known to have remained audible till her dying day I wonder if any of the children picked up tit bits of her accent! It is a most fascinating topic!