Analysis of information sources in references of the Wikipedia article "Carlos Eugénio Correia da Silva, Count of Paço de Arcos" in English language version.
{{cite web}}: CS1 maint: archived copy as title (link). With the Napoleonic invasions of Portugal, most of their wealth was lost to the invading French troops. "Missão Diplomática do Conde Paço d'Arcos no Brasil – 1974", preface pp. XXII-XXIV{{cite web}}: CS1 maint: archived copy as title (link){{cite web}}: CS1 maint: archived copy as title (link). With the Napoleonic invasions of Portugal, most of their wealth was lost to the invading French troops. "Missão Diplomática do Conde Paço d'Arcos no Brasil – 1974", preface pp. XXII-XXIV{{cite web}}: CS1 maint: archived copy as title (link)