Complex sentence: Christian Friedrich Heinecken (February 6,1721--June 27,1725) also known as "the Infant of Lübeck," is a legendary German child prodigy reputed to have spoken within hours of his birth.
Split into simpler sentences: Christian Friedrich Heinecken (February 6,1721--June 27,1725) also known as "the Infant of Lübeck," is a legendary German child prodigy. In some versions he is reputed to have spoken within hours of his birth.