In 1819 Karel Nicolaas Coert was born. He died on the 9th of August 1874 in Soerabaja. On the 6th of June 1840 he married Suzanna Steevens in Soerabaja. It is unknown when she was born and when she died. She was the daughter of Wijnand Steevens (in 1824 he was a Customhouse officer in Soerabaja). Karel Nicolaas Coert and Suzanna Steevens had four children. Wijnand Johannes, Henry Edwin, Charles Arthur and James Emelian Coert.