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Short answer: yes.

Long answer: Libreoffice stores date values as a number. The number represents the number of days from an arbitrary reference date. In the case of Libreoffice calc, the default reference date is 30 Dec 1899. Dates earlier than this are simply stored as negative numbers. Other options for reference dates can be chosen under Preferences > LibreOffice Calc >> Calculate.

I'm impressed that you have been able to trace your family back this far.

Are you aware that there are specific applications for genealogical projects? One free, cross-platform and open-source example is Gramps (https://gramps-project.org).