[3] Its nearest higher peak is Mount Prince Edward, 1.0 km (0.62 mi) to the south-southeast.

Prince Henry is composed of sedimentary rock laid down during the Cambrian period.

[4] The mountain was named in 1913 by the Interprovincial Boundary Survey for Prince Henry, Duke of Gloucester (1900-1974), the third son of King George V. The name was officially adopted in the 16th Report of the Geographic Board of Canada in 1919.

[5] The first ascent of Mount Prince Henry was made in 1929 by Kate (Katie) Gardiner with Walter Feuz as guide.

In terms of favorable weather, the best months for climbing are July through September.