In 1560, he decided to return to Salamanca in order to complete a Doctorate in Theology, but began working with Bishop Julião de Alva in Bragança, where he remained until 1563.

[3] By decree on the 20 May 1565, he was nominated to be the vicar and orator at the parochial Church of Nossa Senhora da Estrela (Our Lady of the Star), in the municipality of Ribeira Grande, a position he held for the next 26 years (until his death).

The work is not limited to geography and history, but also covers daily life, customs and traditions, genealogy, the origins of place names, flora and fauna, and affirms Frutuoso's humanist nature, typical of the Renaissance.

The author is an encyclopedic, literary and artistic observer of the natural phenomenons, preoccupied with experimental alchemy and speculative on aspects of geology, biology, mineralogy and petrology.

The manuscript fell into the hands of people who restricted access to the document, until it was donated to the General Committee of Ponta Delgada, and incorporated into the holdings of the Public Library and Archive (where it now resides).