Short answers, pulled from the story.
Heart-burial is a type of burial in which the heart is interred apart from the body. This custom emerged among European nobility in the early twelfth century as a practical solution to long-distance transport.
Henry I died in 1135 and his body found its final resting place at Reading Abbey. His heart, bowels, brains, eyes, and tongue were instead interred at Rouen Cathedral in Normandy.
Robert the Bruce died in 1329 and his body rests in Dunfermline Abbey. Sir James Douglas carried Bruce's heart in a silver casket around his neck during a campaign against Moorish kings until Douglas died in battle before reaching Jerusalem but the heart was recovered and eventually laid to rest at Melrose Abbey.
Frédéric Chopin died in 1849 and his heart was removed before his funeral. It was later sealed within a pillar of the Holy Cross Church on Krakowskie Przedmieście and has reposed within the church since its return despite periods of removal for protection.
Queen Marie of Romania died in 1938 and requested her heart go inside a jewelry box she received in 1893. Authorities discovered the desecration in 1971 and moved the box to the National Museum of History until 2015.