How can I get a death date corrected?
I am researching a branch of the Kosiek family tree in Chicago IL. My great grandmother was Katarzyna/Katherine/Catherine Kosiek, nee Starzec. She was married to Andrej (Andrew) Kosiek. Andrej passed away in 1945 and his obituary references his late wife Katherine, along with his children, with names and spouses.
But SClark99 reports Katherine's death as September 1968 and links her to Andrej Kosiek (with his correct birth and death) and only one of her sons, Walter, again with the correct birth and death. It seems that the obituary for a different Catherine Kosiek (no reference to Starzec either) was the source (I have found this obit on Newspapers), but this obituary has completely different family members.
How do I get this corrected? I have also seen the same problem on Find a Grave with Russ C being the creator and I am trying to get that corrected also. Thank you for your help.