Egeria or Aetheria (often called Sylvia) was a Gallaeci or Gallic woman who made a pilgrimage to the Holy Land about 381–384. She wrote an account of her journey in a long letter to a circle of women at home which survives in fragmentary form in a later copy. This may have been the first formal writing by a woman in Western European Culture.
en.wikipedia.org/wiki/Egeria_(pilgrim)