Complex sentence: Maruis' father, also named Morten Smith-Petersen was considered a brilliant young lawyer with great promise, in 1888 he died suddenly of pneumonia, when Marius was only two years old.
Split into simpler sentences: Maruis' father, also named Morten Smith-Petersen was considered a brilliant young lawyer with great promise. In 1888 he died suddenly of pneumonia, when Marius was only two years old.