Complex sentence: Alicia was the site of the old town of Angadanan, formerly known as the Angadanan Viejo, until the new Angadanan (currently known as'Angadanan') was relocated in 1776 to its current location near the Angadanan Creek.
Split into simpler sentences: Alicia was the site of the old town of Angadanan. It was once called Angadanan Viejo when the new Angadanan was relocated in 1776 to its current location near the Angadanan Creek.