The Duke and Duchess of Cambridge are the titles held by Prince William and Catherine Middleton. They became the Duke and Duchess upon their marriage on April 29, 2011. As members of the British royal family, they undertake various official duties and represent the monarchy at public events. The couple has three children: Prince George, Princess Charlotte, and Prince Louis. They are known for their charitable work, focusing on issues such as mental health, early childhood development, and conservation. The Duke and Duchess often engage with the public and promote community initiatives through their foundation, the Royal Foundation.