This template calculates a person's approximate birth year based on their age at death. This is useful when a reliable source states only their age at death. This can also be used when a person is dead and a reliable source states only their age at the time of publication, but their actual death date is not known.
Syntax
{{Birth based on age at death|age|YYYY|MM|DD}}
Example
{{Birth based on age at death|93|1978|09|12}}: 1884 or 1885
{{Birth based on age at death|25|1846|01|04}}: 1820 or 1821
Combines functions of {{Birth date}}, {{birth-date}}, {{birth date and age}}, {{birth year and age}}, {{death date}}, {{death-date}}, {{death date and age}}, and {{death year and age}}.
To display approximate birth year and current age given a particular date (e.g. when a dated reference mentions the age of a person), only works for living people.