Complex sentence: Hillegonda van Bijler died presumably in late December 1626, since she was buried on January 1,1627, three days before her third child Maria; she was around the age of 28 and the couple had been married less than eleven years.
Split into simpler sentences: Hillegonda van Bijler is presumed to have died in late December 1626, since she was buried on January 1,1627, three days before her third child Maria. She was around the age of 28 and the couple had been married less than eleven years.