The name of the parish comes from its situation, in an area that was fertile and able to support agriculture; the
Portuguese etymological name for
good field (). Its population has, since its settlement, been tied to agriculture. Agrobom was the first ecclesiastical parish in the municipality of Alfândega da Fé and its parish seat includes the village of Felgueiras. Although the settlement is quite old, few records exist to mark its age, although a Roman era
castro was known to have existed in the area (remnants of its form no longer exist). Of the ecclesiastical parish, which was located 18 kilometres from the municipal seat, it was known to be a patron of Royal Houses, and provided a wealthy rent for the local abbey. At one time the parish of Vale Pereiro, today independent, was a locality of Agrobom, when Agrobom was a parish of Castro Vicente (until 1855). ==Geography==