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a useful tool for genealogists. It is designed to calculate the birth
when the age at death and the date of death are the only facts known.
we all know this is often the only information recorded on older
Note regarding Birth Date
While doing some testing on this with 30+
already containing a birth date, death date, and age, I have found it
be only 39% accurate. It was 1-3 days off 38.5% of the time and
than 3 days the remaining 22.5%. No one really
exactly how stonecutter's figured the age of the person. Did
they use a formula, count off the days between birth and death, did
figure in Leap year? Varying methods could have been
friend has a different method of calculating a birth date and
running the same test, found it to be only 22.5% accurate!
These methods work ok for approximate birth dates, but it should
that these date's are most likely not correct. In
several step process from when the stonecutter first
age from the birth date and carves the date on the stone and then
tries to do just the opposite, there is lots of room to make
along the way.