Hi Angelica, hopefully their obits will state where they were buried. There is an obit volunteer for Marion County at Random Acts of Genealogocal Kindness, www.raogk.org/ choose Oregon, choose Marion County name Connette.
If that doesn't work out, there are a couple web sites with Marion County cemetery indexes;
Marion County Historical Society, www.marionhistory.org/collections/items.htm .
Marion County, Oregon, www.oregonpioneers.com/marion/ .
Marion County Pioneer Cemeteries, www.marioncountycemetery.com/ .