About Bertrand Dupeiron
Bertrand Dupeiron or Dupeyron, French-born, circa or before 1790.
In 1795 two French armies invaded Spain, .......one of them took 'Bilbao (on 19 July 1795).'
Sometime later his father became the French Consul in Bilbao, Spain.
Married - before 1821 - to a Spanish lady of Belgian/German ancestry, whose last name was " De Brath". The De Brath name can be traced back to the 16th Century in Wallonia, Belgium - a German-speaking part of Belgium - when a De Brath was recruited by the Duke of Alva to form part of the Royal Guard in Spain. The Germanic spelling ending with a 'th' would be correct and the pronunciation would have been "Brat". [In the case of De Brath, De was always spelled with an upper case D, denoting Spanish upper-class]
Bertrand's son(s) spent most of the holidays in Bilbao with their French Consul grandfather in the 1820s and 1830s, and indeed his son Felix is known to have had Spanish citizenship.
According to Stanley De Brath, son of Felix:: the family name was Duperrier De Brath - possibly a spelling error, as Felix's marriage certificate lists Dupeiron De Brath. Felix was sent to a Jesuit College in the South of France to be educated. This could mean anywhere in the southern part of France - but possibly in the Pyrenees/ Basque area or Bayonne.
Bertrand Dupeiron De Brath is so named by his son's English marriage certificate. Bertrand's rank or profession is listed as 'Gentleman'. Perhaps Felix was trying to simplify the Spanish naming laws and simplify them in England, as he continued to show his name as Felix D. De Brath.
[Some research has turned up correspondence with the Banking House "Thuret et Cie" from a Bertrand Dupeyron, Stockbroker in Bayonne, France, between 1824 and 1825. Reference to the same Bertrand Dupeyron, Stockbroker, aged 26 in Bayonne appears when he is a witness to a baptism in September 1811. This would place this Bertrand Dupeyron's birth c. 1785. Bayonne's location is close to the French/Spanish border, but also within the Basque Country straddling both France and Spain, which gave it an often privileged position in commerce.]