When you are looking for records of a relatives death, if it was quite a while ago, church records can be a good resource to look for and go through.
In many communities, the church kept track of the births and deaths, and they will have likely kept these records safe so that you can find what you need in order to get a death certificate copy. Finding the records could be more difficult if the church if
that community no longer exists, or you are not sure where the deceased was living at the time of their death.
But with a bit of diligence and patience, you will likely find the information that you require.