Lothar von Faber, the fourth generation in the business, was the outstanding entrepreneur in the family. In recognition of his achievements and social services he was made a hereditary baron and later a counsellor to the Bavarian crown. His heir was his granddaughter Ottilie, who married Count Alexander zu Castell-Rudenhausen, a scion of one of Germany's oldest aristocratic families. The Castell line goes back to Franconian counts who were mentioned in a document in 1057. The name still has an excellent ring to it: the Castell family owns the oldest private banking house in Bavaria and one of the oldest German vineyards.

Alexander and Otillie were married in 1898. Her grandfather's will had stipulated that the company should retain the name Faber for all time. And so, with royal assent, the family name Faber-Castell came about, a name that was also applied to the business and the brand.