While many Americans are familiar with the Kennedy family curse, most of us probably don't know much about the curse that's reportedly been haunting Monaco's royal family since the 14th century.
As the story goes, the first Grimaldi leader, Rainier I, was cursed by a Flemish woman he had kidnapped. The woman's curse is said to have been inflicted with the hope of ensuring that none of Rainier's descendants would ever have a happy marriage.
It seems that most people forgot about the alleged curse until Grace Kelly died in the 1980s. Before her death, many believed that Prince Rainier III and Princess Grace didn't always have the best marriage.
Princess Grace met her husband in 1956 and had what was then called the "wedding of the century." Marrying into the royal family required Grace to make a number of concessions, including giving up her career as an Academy Award-winning actress.
The marriage was troubled from the beginning, as Prince Rainier reportedly had three mistresses within the first month. Grace was reportedly aware of the relationships, at one point telling her hairstylist, "I know my husband has affairs with other women. That's very frustrating to me and makes me very unhappy."
The pair went on to have three children together. While their family looked perfect from the outside, it's been said that they weren't especially close at home. Princess Caroline later told People, "For my brother and I, [nanny] Maureen was the key figure in our life. When we were little, we were probably closer to our nanny than to our parents."
Princess Caroline herself later endured a short-lived first marriage that ended in divorce and the unexpected loss of her second husband. Caroline married Philippe Junot in 1978, when she was 21 and he was 38. By 1980, the marriage was over.
Three years later, she married Stefano Casiraghi. The two had three children together, but Stefano died in an accident in 1990.
In 1999, Caroline married for a third time. She and husband Prince Ernst August of Hanover had one child together, but allegations of violence in the home led to their 2009 separation.
Princess Grace's second daughter, Stéphanie, was in the car crash that took her mother's life. After that event, she gained a reputation for being unpredictable. She married her bodyguard Daniel Ducruet in 1991 and had two children before their 1995 divorce due to infidelity.
In 1998, she gave birth to a third child, fathered by her bodyguard Jean-Raymond Gottlieb.
Stéphanie and circus trainer Franco Knie linked up in 2001, and she moved herself and her children to travel with the circus. In 2003 Stéphanie married circus performer Adans Lopez Peres and divorced him a year later.
And of course, a lot of people have focused on the marriage between Prince Albert and Princess Charlene of late. Charlene reportedly tried to break things off with Albert at least twice before they got married in 2011, and Albert has had children with other women since the time the two have been together.
