[1] Born on September 1, 1873, into the Ferreira Sardo family, he pursued his education at the Seminário Maior de Coimbra, where he excelled as both a student and a professor.

Prior Sardo played a key role in founding his hometown parish, a grant conferred by King Manuel II on August 31 of 1910.

[1][3] Beyond his spiritual duties, Sardo played a vital role in the everyday life of the local region, advocating for healthier living habits.

[1] Due to João Ferreira Sardo dedication to social actions, beyond the spiritual duties, he supported the community by improving the labour conditions on the codfish business that he owned and managed, also served as a local politician in his hometown and municipality.

[2][6] In 1910, Prior Sardo commenced the construction of the Mother Church in Gafanha da Nazaré, strategically emphasizing its central geographic location.