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Books about Sommerlath:
Bekenntnis zur Kirche: Festgabe fur Ernst Sommerlath zum 70. Geburtstag by Unknown (1960)
Tradition und Sukzession. Studien zum Normbegriff des Apostolischen von Paulus bis Irenaus, (Arbeiten zur Geschichte... by Georg Gunter Blum (1963)
Wiki information Sommerlath:
Carl August Walther Sommerlath was a German businessman and the father of Queen Silvia of Sweden. He was president of the Brazilian subsidiary of the Swedish steel-parts manufacturer Uddeholm Tooling after World War II.
Queen Silvia of Sweden is the spouse of King Carl XVI Gustaf and mother of the heir apparent to the throne, Crown Princess Victoria. In 2011, Silvia became the longest serving queen of Sweden, a record previously held by Sophia of Nassau.