The Society of the Friends of St George's and Descendants of the Knights of the Garter is a constituent group of the Foundation of the College of St George, Windsor Castle which is a national charity in England. The society includes more than 5,100 members worldwide (including more than 900 AmFriends members of the American Friends of St George's and Descendants of the Knights of the Garter Inc.) to "protect, preserve and enhance" the college, its St George's Chapel, Windsor Castle and the royal chivalric knighthood, the Order of the Garter.