The 5th Earl of Ickenham, of Ickenham Hall, Hampshire. For the most part, his domineering American wife Jane keeps him under reasonable control on his estate, but he escapes from time-to-time to London and other parts where he does his best to spread his version of sweetness and light: "When pleasing inspirations floated into Lord Ickenham's mind, the prudent man made for the nearest bomb-proof shelter." (Uncle Fred in the Springtime
) Uncle Fred is something of a trickster figure, intelligent, mischievous, but sometimes very helpful.
These schemes tend to involve the very reluctant participation of his nephew "Pongo" Twistleton, much more nervous and pessimistic than Uncle Fred (especially since he may end up as the one on the receiving end of the trick.) "The girl laughed -- the gay, wholehearted laugh of youth. Pongo remembered that he had laughed like that in the days before he had begun to see so much of Uncle Fred." (Uncle Fred in the Springtime
)Uncle Fred in Wikipedia