When you are entering the information from a sourceSource: "where information was found". This could be anything from an archive in a county records office, a book, or even a relative's recorded recollection. Citing your Sources helps to show how you reached a particular conclusion about an Individual., you may find you have an Age to record; this will be the age of the Individual at the time the Event happened or the AttributeEvents are things that happened to an Individual and Attributes are things that described them. was true, according to the information in the Source(s) that you have.
When entering a Fact, you can:
- Enter the Age in years in the Age: box; or
- Invoke the Age Entry Assistant Dialog using the … Icon to the right of the Age field.

Child, Infant and Stillborn should be used if that is the term used by the relevant Source.
Otherwise, fill in the Age to the degree of precision that the Source provides.
If the Age a source specifies is improbable given the sequence of FactsFacts are one of the key concepts at the heart of Family Historian; they are how you record the things that happened to, or described, each ancestor (Individual). around it, an ! will be added to it in the Facts Tab of the Property BoxThe Property Box is the primary window for data entry and for viewing details of stored records. It is used with records of all types. .
If you enter the DateWhen an Event happened, or an Attrribute was true. for a fact, but not the age, the Facts Tab of the Property Box will show calculated Ages surrounded by (), e.g. (36-37) or (41).