'A chartered member of Blandings'

 For some unfathomable reason, I continue to be bombarded with Bertrand Russell material on Facebook, invariably accompanied by photographs of the Great Man sagely sucking on a pipe. Today's bit of Russelliana did, for once, pique my interest. It quoted from a fan letter that Russell wrote in 1954 to P.G. Wodehouse, in which he declared that, 'In common with the rest of mankind, I derive great pleasure from reading your books.' He goes on to proudly outline what he has in common with Bertie Wooster:
'My name is Bertie; I had an aunt called Agatha and an uncle called Algernon; I came within an ace of being called Galahad; and my great grandfather put a plaque in his garden to commemorate a victory over his head gardener.'
Galahad Russell? Could he have had a career in philosophy with a forename like that? it would have been uphill work...
Wodehouse, in reply, declares that 'I am very proud to think that you have enjoyed my books', and goes on to tell Russell that 'You are certainly qualified to rank as a chartered member of Blandings!'.
The letter, the only one between the two men, is in the Russell Archives at McMaster University, which also has eleven Wodehouse volumes owned by the illustrious 'chartered member'.