In Celtic mythology, white animals are often guardians of the gateways to the Otherworld, the Celtic version of Heaven. Sightings of white stags in particular can also foreshadow life-changing events.

The quote around this depiction of the white stag reads:

Delightful is the land beyond all dreams,
Fairer than aught thine eyes have ever seen.
There all the year the fruit is on the tree,
And all the year the bloom is on the flower.
There with wild honey drip the forest trees;
The stores of wine and mead shall never fail.
Nor pain nor sickness knows the dweller there.