They had five sons - Edward, who succeeded his father as Edward I, Edmund, Earl of Lancaster who is also buried in the Abbey, Richard, John, and Henry, who all died young and were buried in the Abbey.
The heart of Henry of Almayne (or Almain) (born 1235), son of Richard Earl of Cornwall and King of Germany and nephew of Henry III, was preserved in a golden heart shrine (cup or vase) within a cavity ...