Grases (is one of 41 parishes (administrative divisions) in Villaviciosa, a municipality within the province and autonomous community of Asturias, in northern Spain.
Situated at 68 m (223 ft) above sea level, the parroquia is 2.78 km2 (1.07 sq mi) in size, with a population of 112 (INE 2007).
Xosé Lluis García Arias, in his book "Pueblos Asturianos: El Porqué de Sus Nombres" ("Asturian People: The Reasons Behind the Names"), explains the etymological significance for Grases and the people of the parroquia: Grases: This is an anthroponym, or a toponym derived from the name of a person.
García Arias proposes that the name is derived from the Latin word CRASSUS.
[1] El Mayorazo: According to García Arias, this refers to "the old civil institution where a family could perpetually enjoy certain patrimonial goods" (translated from Spanish).