Complex sentence: He served as a soldier in Scythia and Egypt, before, remembering a prophesy that his descendants would rule Ireland, he set off to the west, getting as far as Spain where he fought several battles before dying, never seeing Ireland himself.
Split into simpler sentences: He served as a soldier in Scythia and Egypt, before remembering a prophesy that his descendants would rule Ireland. He set off to the west, getting as far as Spain where he fought several battles before dying, never seeing Ireland himself.