- Estimate the death: If the parents is not listed on the marriage record for one of the children.
- Church records
- US Census mortality schedules
- US Census: Estimate when the person does not show up from one census to the next
- Family Records
- Military records
Example of a death record. Things to look for on a death record are name, age, date and place of death, date and place of birth, parents, informant, spouse, cause of death, burial information.