Banque de Luxembourg is a financial institution in Luxembourg, which primarily focuses on wealth management and high-net-worth individualsFounded in 1920, the history of Banque de Luxembourg is closely tied in with the rise of the financial centre of Luxembourg. 1920 : Banque d'Alsace et de Lorraine, later Crédit Industriel d'Alsace et de Lorraine (CIAL), opens its first branch in Luxembourg. 1937 : Banque Mathieu Frères, the forerunner of Banque de Luxembourg, is founded. 1969 : CIAL becomes a major shareholder in Banque Mathieu Frères.