Luigi is on the left. He's elder. As you see, he looks like younger than Filippo.
1) Luigi and his spouse Maria Amelia were titled count and countess of Roccaguglielma by collation of King Francesco II (january 31th 1872)
Luigi took the title of count of Aquila after his father's death in Paris in 1897.
2) Flora Maria de la Concepçion Blanca Carlota Boonen was created countess of Espina by collation of the count of Caserta who called her "Flor" in his letters.
When Flor died in Guran Castle in a small village near Toulouse (France) in 1912, her husband declared her as Her Imperial and Royal Highness Maria Flore princess de Bourbon Bragance( Borbon e Bragança) to civil status (decease certificate).
REMI