Mount Fitzhenry does not appear to be a widely recognized geographical feature or established real-world concept with significant encyclopedic documentation.
Its most notable reference is within the fictional context of Brian Jacques's "Redwall" series of fantasy novels. In this literary series, Mount Fitzhenry is depicted as a prominent mountain range located near the formidable badger stronghold of Salamandastron. Within the fictional narrative, it forms part of the rugged landscape surrounding the mountain fortress, often serving as a significant geographical landmark in the stories featuring the Badgers of Salamandastron. Accurate geographical and historical information regarding a real-world Mount Fitzhenry is not confirmed.