Edgar Allan Poe married his cousin Virginia Clemm in Baltimore in 1835. At the age of 21, Queen Victoria married her first cousin, Prince Albert of Saxe-Coburg-Gotha.
For the next 20 years, they lived in close harmony and had a family of nine children, many of whom eventually married into the European monarchy.
All of Darwin’s children were healthy, had no known birth defects, and most of them apparently were either geniuses or near geniuses.However, for the moment, let’s focus only on the math involved.A single individual occupies multiple places in the family tree when the parents of an ancestor are cousins (sometimes unbeknownst to themselves).Princess Mary of Teck (later to become Queen Mary) married her second cousin, once removed, King George V. A much longer list of notable couples who were cousins may be found at Once you go further apart than second cousins, the issue becomes more difficult. All first cousin marriages are permitted in the other 24 states. Click on the appropriate state in the map to view each state’s laws.Thousands of people marry their first or second cousins every year. After all, can you name all your third cousins and fourth cousins and those even further away in the family tree? There is always a strong possibility that you unknowingly married a distant cousin. Six states ban marriage between first cousins once removed, i.e., marrying the son or daughter of your first cousin. Some states have more “interesting” laws, such as Arizona: first cousins may marry only if both are sixty-five years of age or older. No European country prohibits marriage between first cousins. is the only western country with cousin marriage restrictions.