Complex sentence: Anna Sandström was the offspring of the bureaucrat Carl Eric Sandström and Anna Erica Hallström, but after her father's early death, she was brought up as a foster-child of the colonel Hjalmar Hagberg.
Split into simpler sentences: Anna Sandström was the offspring of the administrator Carl Eric Sandström and Anna Erica Hallström. After her father's early death, she was brought up as a foster-child of Colonel Hjalmar Hagberg.