Ah, but they weren't that extravagant, Tunip, they used to recycle them!
George V (George Frederick Ernest Albert) had 5 sons, but didn't seem to worry about running out of names, he just reused them:
Edward Albert Christian George Andrew Patrick David (Edward VIII)
Albert Frederick Arthur George (became George VI when his brother abdicated)
Henry William Frederick Albert (Duke of Gloucester)
George Edward Alexander Edmund (Duke of Kent)
John Charles Francis ('The Lost Prince' had epilepsy and never appeared in public, died at the age of 13 just after the first world war)