
1) Fictional king
Found on
https://www.crosswordclues.com/clue/mambrino

Mambrino was a fictional Moorish king, celebrated in the romances of chivalry. According to legend, Mambrino possessed a helmet of pure gold that rendered its wearer invulnerable. Possession of the helmet was the ambition of all the paladins of Charlemagne, and it was carried off by first by Gradasso, King of Sericane, and a second time by Rinaldo...
Found on
http://en.wikipedia.org/wiki/Mambrino
[horse] Mambrino was a grey Thoroughbred racehorse, foaled in 1768, who sired Messenger ( GB) (gr. c. 1780), who was exported to North America, becoming a foundation sire of the Standardbred harness racing breed. Messenger was also important in the foundation of English Coach horses. ...
Found on
http://en.wikipedia.org/wiki/Mambrino_(horse)
No exact match found.