The House of Windsor in the twentieth century
The house of Windsor is mostly buried *in* Windsor, with two sites providing the majority of burial sites for the royal family during the twentieth century.
Monarchs and their spouses are almost all buried in St. George's Chapel. Windsor Castle: Edward VII and Queen Alexandra; George V and Queen Mary; George VI and Queen Elizabeth (the Queen Mother). George V's elder brother, Albert Victor, and his sister, Louise the Princess Royal, are also in SGC.
Princess Margaret, the sister of the present Queen and daughter of George VI, was cremated at Slough Crematorium; her ashes are held in the Royal Vault in St George's Chapel.
She was the first member of the royal family to be cremated. Despite what the Guardian thinks, Margaret was not the first member of the Royal Family to be cremated, as her great-great-aunt, Princess Louise (daughter of Queen Victoria and sister to Edward VII) was cremated in 1939 at Golders Green.
Diana, Princess of Wales is buried on an island in a lake on her family's estate at Althorp.
Otherwise, most other recent royals can be found in the Royal Burial Ground behind the Royal Mausoleum at Frogmore House. These include Edward VIII, later Duke of Windsor, and his Duchess, formerly Mrs Wallis Simpson, as well as Edward's brothers Henry Duke of Gloucester and George Duke of Kent, and their aunt, Princess Victoria.
Of the two remaining children of George V, his only daughter, Mary, Countess of Harewood, is buried at All Saints' Church in Harewood, and his youngest son, Prince John, is buried at Sandringham. The latter is buried alongside his uncle, Alexander John, youngest son of Edward VII, who lived only one day. Alexander John's older sister, Maud, became Queen of Norway and is buried in the royal mausoleum in Norway.
St. George's Chapel is open to visitors. The Royal Burial Ground is not open to the public, but may be viewed from around its perimeter; Frogmore House has very limited opening times. Althorp is open for visitors in July and August this year.