Forensic analysis of the heart of Richard I of England, the Lionheart, have revelaed traces mint, myrtle, and frankincense, indicating the heart was embalmed. The heart was probably wrapped in linen.
King Richard was killed by a crossbow bolt in 1199. Parts of his body were brought to different parts of France; his heart went to Notre Dame cathedral in Rouen.
The remains of the heart were discovered inside a lead box in 1838.