Via Medievalists, a set of charming (or not) stories from the Middle Ages.
The first story may strike a contemporary reader as grotesque, not merely for the cannibalism but for the prospect of having your actual heart cut out and sent to someone you love. Yet this practice was regarded not as grotesque but rather intensely romantic, in the old sense of the word, in the High Middle Ages. Robert the Bruce had his heart removed after his death and sent on Crusade, as his heart had always longed to go, but his duty to Scotland kept him from it. His greatest friend carried the heart, and died crusading against the Moors in Spain.
Story number four may or may not be practical, but it is a common story. The Icelandic Heimskringla has Harald Hardrada, the Thunderbolt of the North, carrying out a similar plan to destroy a city in Sicily while campaigning in the mercenary service of the lords of Byzantium. In that case they supposedly gathered up flying birds and set them ablaze, causing them to fly home in a panic to their nests within the walls of the city.
As for the third tale, just last night I finished the chapter of Barnaby Rogerson's The Last Crusaders that deals with the Portuguese kings. This sort of deep love attachment and flamboyance sounds very much in character for the family. That, by the way, is proving to be an entertaining history. I recommend it.