Complex sentence: In the communal territory has been excavated one of the richest Roman villas (1st century BC), probably belonging to the "gens" Poppaea, and known as Villa Poppaea.
Split into simpler sentences: In the communal territory, one of the richest Roman villas has been excavated. Dating to the 1st century BCE, it probably belonged to the "gens" Poppaea, and is known as Villa Poppaea.