Going back a bit, Norfolk is THE Catholic dukedom. The 17th Duke, who died in 2002, had quite a high profile in church-related matters (he famously declared of 'natural birth control', 'My wife and I tried it, and it didn't bloody well work'), but little is heard of his son, the 18th Duke.
The dukedom of Portland died with the 9th Duke in 1990. The earldom of Portland survives and the current holder is best known for his role in the long-running Radio 4 serial 'The Archers'.
Ann