Complex sentence: For nearly a century Dolgellau was the home of Dr Williams School, a pioneering girls' secondary school funded from the legacy of Daniel Williams, the Welsh non-conformist of the seventeenth/eighteenth century.
Split into simpler sentences: For nearly a century Dolgellau was the home of Dr Williams School, a pioneering girls' secondary school. This was funded form the legacy of Daniel Williams the Welsh non-conformist of the seventeenth/eighteenth century.