On one of the lists I am on (hope it was this one) it was being discussed how to determine the birthdate from the death date, such as DOD 14 January 1924, was 80 yrs.6 mos, 21 days. This was on my G-grandfathers death cert and I am checking info previously obtained. I have birthdate as 24 June 1843. Can someone refresh my mind about how to get the correct figure? TIA. Anna alangley@hiwaay.net