My great, great uncle and aunt, Hinderk (Henry) and Anna Catharina (Katherine) (Mennenga) de Haan came over from Germany and lived in Grundy, Iowa and then in Titonka, Iowa. They are listed as Henry and Katherine Haan in the 1910 census. Katherine died in Titonka, Iowa on March 15, 1918. I am trying to find out where she might be buried. If anyone has any info on Katherine or Henry, please let me know. Thank you.