Édouard de WalckiersViscount Joseph Édouard Sébastien de Walckiers de Tronchiennes was a Brussels-born banker.LifeHe was the son of viscount and of Dieudonnée Louise Josephine de Nettine, heir to the Nettine bank in Brussels, founded in 1733 by her father Matthias de Nettine. Matthias' widow Barbe Stoupy inherited the bank in 1749: