Fessonia, or probably more properly, Fessona, is a Roman Goddess
Who aids the weary. Not a whole lot is known of Her besides Her name, which
is assumed to be from Latin fessus, meaning 'weary,' 'tired,' 'exhausted,'
or 'worn out;' the only ancient mention of Her is in Augustine's 5th century
(C.E.) City of God, where he ticks off a list of minor Deities in order
to mock the Pagan ways that were competition for his Christianity. (And yes,
he comes off like a right royal bastard, if you ask me.)
She is also mentioned by the 16th century Flemish cartographer
Abraham Ortelius, considered the father of the modern atlas, and a guy who it
seems knew his Augustine. Apparently She came to him in a dream, and inspired
him to draw the famous Vale of Tempe in Thessaly, Greece, not far from Mount
Olympos, thought to be an especially idyllic and tranquil place where the weary
might find true rest. Of course the real (not the poetic) beauty of the Vale
of Tempe is of a rather more rugged sort, with dramatic cliffs for part of its
way, said in legend to have been split open by a forceful jab from Poseidon's
trident; but, well, Ortelius probably didn't know that.
Fessus can also be used of illness, to mean 'sick,' 'feeble,'
or 'infirm,' so it is not too much of a stretch to guess that Fessonia may have
been invoked to aid healing in the case of illness, and to ward off the weariness
being sick can cause. Though I suppose that is fairly circular, as weariness
can both cause and be the result of illness. At any rate, as the Goddess of
weariness, or as the Goddess Who was in charge of weariness, it is probably
also not too much to assume that in parallel with other Deities of sickness
such as Febris Fessonia
was thought to both cause and cure weariness. Which, to string it along a little
further, could make Her the Goddess of bed-rest.
Conjecture, I know. But hey, I'm tired.