Complex sentence: Carl Michael Bellman was born on 4February 1740 in the Stora Daurerska house--one of the finest in the Södermalm district of Stockholm, the property of his maternal grandmother, Catharina von Santen: she had brought up his father, orphaned as a small child.
Split into simpler sentences: Carl Michael Bellman was born on 4February 1740 in the Stora Daurerska house, which was one of the finest in the Södermalm district of Stockholm. The house was the property of his maternal grandmother, Catharina von Santen, who had brought up his father, orphaned as a small child.