Prince William and Kate's Twitter account has changed its name to The Duke and Duchess of Cornwall and Cambridge..

William and his wife Kate have received the titles previously held by Charles and Camilla, the son and daughter-in-law of Queen Elizabeth II of Great Britain, who died today at the age of 96..

The title of Duke of Cornwall has always been held by the sovereign's eldest son, who is heir apparent to the throne upon the death or abdication of the current monarch.. The Duke is formally head of the Duchy of Cornwall..

The title of Prince of Wales is not automatically granted or inherited, it is specifically granted by the monarch each time, usually several months or even years after the heir acquires the appropriate status..

If the former title of Charles, Prince of Wales passes to Prince William, his wife will have the title of Princess of Wales. It has not been used since Diana Spencer took over the role in 1981 when she married Prince Charles..

Although Camilla Parker-Bowles - Prince Charles's current wife - had every right to assume the title of Princess of Wales, she chose not to wear the princess mantle out of respect for the late Diana, with whom they had an uneasy relationship..

William and Kate were previously known as the Duke and Duchess of Cambridge.. Prince William, born in 1982, is now first in line to the British throne. If he decides to use his name as king, he will be King William V.

William is the firstborn of King Charles and his first wife Diana Spencer. Prince's wife - Kate Middleton. The couple has three children: two sons and a daughter.