Erling Lorentzen is the widower of a princess born in which year ?
Princess Ragnhild, Mrs. Lorentzen Princess Ragnhild, Mrs. Lorentzen (Ragnhild Alexandra; 9 June 1930 – 16 September 2012) was the eldest child of King Olav V of Norway and Princess Märtha of Sweden. She was the older sister of King Harald V and Princess Astrid.
Princess Laurentien of the Netherlands Princess Laurentien of the Netherlands (née "Petra Laurentien Brinkhorst"; born 25 May 1966) is the wife of Prince Constantijn and sister-in-law of King Willem-Alexander and Queen Máxima.