He went to the Viceroyalty of the Río de la Plata in 1770 settling in the Banda Oriental del Uruguay in 1773.
He was married to María del Pilar de Pérez Valdéz, a native of Buenos Aires and in 1795 his son Manuel Francisco Bernardo Lecocq was born, who became a politician and a notable Uruguayan businessman.
[2] Bernardo Lecocq played an important role in the operations against the British invasion of Montevideo, including the Battle of Cardal, on 20 January 1807.
In 1776 he was responsible for building the fortifications of Montevideo, and the forts of San Miguel (1772)[3] and Santa Tecla (1774).
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