World | succession Firstborn Daughters Can Now Ascend British Throne Rule change agreed to today By Evann Gastaldo Posted Oct 28, 2011 8:55 AM CDT Copied Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend a fundraising Gala at St James's Palace on October 13, 2011 in London, England. (Getty Images) Thanks to a rule change agreed to today, Prince William’s firstborn can ascend the throne, even if that firstborn happens to be a girl. The change to the royal succession rules was approved by leaders of the 16 countries for whom the British monarch is head of state; they also decided to scrap the rule prohibiting a monarch or heir from marrying a Catholic. The change to the centuries-old rules will take effect beginning with children of William and Kate, the Los Angeles Times reports. Said Prime Minister David Cameron, "The idea that a younger son should become monarch instead of an elder daughter simply because he’s a man, or that a future monarch can marry someone of any faith except a Catholic—this way of thinking is at odds with the modern countries that we’ve all become." Read These Next Hillary might nominate Trump for a Nobel if he ends war. Kristi Noem is catching some flak over her new home. Girl, 11, disappeared in 1996. An arrest has just been made. Paul Rodriguez keeps finding himself in hot water. Report an error