Oblique wall probable foundation of the primitive church
Elements pertinent to the ancient Catalan- Aragonese church plant are rare and difficult to detect (fig. 1).
Amongst these there is an oblique wall still visible in the outer facade also identified under the church at the foundation level (fig. 2): it was probably a buttress which overlapped the rest of the portico, then already destroyed and covered by layers of earth.
Another structure then stood on this oblique one, facing East-West, forming the North side of a horseshoe-shaped structure (fig. 3), which still supports the facade just for the width of the central nave.
It is possibly the oldest masonry structure (even though at foundation level), so what remains of the single hall church built in the XIV century. The constructions of the new Iberian rulers in Cagliari (the ancient basilica of Bonaria and San Giacomo) or in their homeland (St. Agata in Barcelona) suggest a single-nave church, small in size, with no side chapels, added in the 16th century.
- M. MARTORELLI, Un decennio di ricerche archeologiche nella Cagliari catalano-aragonese, in A. CIOPPI (a cura di), Sardegna e Catalogna officinae di identità, riflessioni storiografiche e prospettive di ricerca. Studi in memoria di Roberto Coroneo. Atti del Seminario di studi (Cagliari 15 aprile 2011), Cagliari 2013, pp. 243-268.