The link says 50% of King George's grandchildren have divorced. National average for the UK is 42% (I looked it up).
I think all divorce is difficult to watch.
Grandchildren of king George V:
Queen Elizabeth - married
The Princess Margaret - divorced
Earl of Harewood - divorced & remarried
The Hon. Gerald Lascelles - divorced & remarried
Prince William of Gloucester - unmarried
Duke of Gloucester - married
Duke of Kent - married
Princess Alexandra, the hon lady Ogilvy - married
Prince Michael of Kent - married
(none of his (6) children and a third of his (9) grandchildren divorced - in both cases one didn't marry)
Grandchildren of king George VI:
Prince of Wales - divorced & remarried
Princess Royal - divorced & remarried
Duke of York - divorced
Earl of Wessex - married
Earl of Snowdon - married
Lady Sarah Chatto - married
(half of his (2) children and half of his (6) grandchildren divorced)
Lady Davina is the second of the former Duke of Kent's grandchildren to divorce.