The former municipality of Sant Gervasi de Cassoles[2][3] (in Spanish, San Gervasio de Cassolas), annexed to Barcelona in 1897, extended over a large part of the former district III of Barcelona, to the northwest of the city, between the municipalities, also formerly independent, of Sarrià, Les Corts de Sarrià, Gràcia and Horta.
The name of Sant Gervasi de Cassoles corresponds to the invocation of a primitive rural chapel or church, named already in 987 (actually, the invocation was to the saints Gervasi and Protasi, twin martyrs).
The origin of Cassoles is more uncertain, being able to come from: In 1789 most of the houses were isolated masies surrounded by woods, fields and vines; crops were mainly rainfed and there were six pairs of oxen to till the land; the main farms were wheat, barley and millet.
The chapel of Saints Gervasius and Protasius has kept its original location (where the Bonanova church is), and until the 18th century the main dedication, since an altar was added with an image of the Mare de Déu dels Afortunats or Bonanova, which displaced the cult of the twin saints.
[4] The primitive nucleus of the village was formed around the church and the road that led to it (today's Sant Gervasi de Cassoles street).