I still haven't finished the MacDonogh book, but I did finally make it through Tyler Whittle's The Last Kaiser. He was fairly sympathetic to Kaiser Wilhelm and showed him to be quite a complex character.
Some points I found interesting--
His mother, Vicky, didn't sound like an easy parent to have. She never ceased to consider herself British and looked down on the German court and culture as inferior to Victorian Britain. Wilhelm compensated by becoming very nationalistic. Her exceedingly high standards meant that she saw Wilhelm as never quite good enough.
His father was out of step with public opinion too, being too liberal for the prevailing political climate. Once again Wilhelm over-reacted against parental views.
The author did not say this, but as I read, I kept wondering how much of the Kaiser's life was shaped by his withered arm--he seemed to be overly concerned with being accepted, with a need to prove himself. I sometimes saw him as a child who never grew up.
There was quite a lot about his father's illness. He had cancerous growths on his vocal cords. Vicky insisted he be treated by a British doctor who felt an operation would kill him. There was a lot of dissension among the doctors and rivalry between the German and British doctors. (Reminded me of the infighting of the doctors caring for President Garfield that I read about in Destiny of the Republic.) While there were plenty of political reasons for the growing antipathies of Germany and Britain, this certainly didn't help. Meanwhile, his father suffered and died a painful death.
Wilhelm II was more of a social reformer than I'd imagined. Apparently he was a great admirer of Theodore Roosevelt, with whom he had much in common. The author said that they both "killed mosquitoes as though they were lions" and that they both "wanted to put an end to all evil in the world between sunrise and sunset." That really gave me a sense of the Kaiser's personality.
I got the impression that his ministers/politicians did quite a lot behind his back, deliberately keeping him in the dark. His eldest son also caused him a lot of political problems.
Although he had difficult relationships with his parents (especially his mother), it sounds like family meant a great deal to him. He was very close to Tsar Nicholas as offered him and his family asylum. He was also very friendly with George V.
He was a big fan of PG Wodehouse's writing.
I'm looking forward to finishing the MacDonogh book to see how his portrait of Wilhelm compares.
Both books have been difficult reads for me because there's been so much detailed German history with which I'm unfamiliar. I'm hoping that I'll have a better grasp of it all by the time I make it through the second book.