The Liechtenstein royal family is in mourning after it was confirmed that Prince Constantin, the youngest son of Prince Hans-Adam II, had died at the age of 51
The heirs of 1952 – what happened to the princes and princesses who were first in line in a year of history royalcentral.co.uk - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from royalcentral.co.uk Daily Mail and Mail on Sunday newspapers.