The Breaking of the Storm by Friedrich Spielhagen

Luckily, however, it seemed that his fears were groundless. It is true that Aunt Rikchen could hardly open her mouth without Uncle Ernst cutting short the thread of the story. Nor did Ferdinanda join much in the conversation; but that at first was not so remarkable, and was easily explained by the fact that Uncle Ernst was most anxious to obtain from Reinhold a comprehensive account of his life and adventures during the many years in which they had not met, and listened to him with attention that would admit of no interruption.

During their conversation, Reinhold had many opportunities of observing the unusual extent and depth of his uncle's knowledge. He could not mention any town, however distant, of which the situation, history, and mercantile relations were not thoroughly well known to him. He expressed to his uncle his surprise and admiration at this.