Looking for information on the deaths of Jacob Leenheer (1843, Tholen - ?, Illinois?) and his wife Johanna Marie Hermsen Leenheer (1855, Arnhem - d. between 1889-1900; Illinois?). Came to the US in 1872 with her parents, Hendrikus Johannes Hermsen and Elizabeth Schepers Hermsen. All relatives here then lived and died in or around Chicago, IL. All are buried in two local cemeteries, EXCEPT Jacob and Johanna. No death records found. No cemetery records found. Any info would be appreciated.