Think about the informant on the death certificate or other record you are viewing. Is there a chance they might not have had first hand knowledge of the information on the deceased. The informant on the 1946 death certificate of Granville Lake in Marcelline, Linn County, Missouri, was his daughter-in-law, Mrs. Ola Lake. While the information she provided in this case appears to be accurate (based upon other records), it is always possible that an informant is uncertain of some information, especially parents and place of birth for the deceased.