 Instead he developed new installations and factories in Portugal, based on these French techniques, despite the opposition of the French ambassador, Abbey de Mornay.He returned to Portugal in 1720 due to incidents involving the Dubois ministry, who difficulted the entry of the Portuguese plenipotentiaries assigned by John V of Portugal to the Congress of Cambrai.At that time, the Portuguese monarch bestowed on him the title of third Count of Ribeira Grande, during the lifetime of his father.