Year of Birth

Ygraine: I never had a mother.
Brangwane: What, hast thou found
A new way to be born? This is great tidings,
And maybe thou wilt earn all women’s thanks-
And yet I have my doubt Martha Kinross, Tristram and Isoult

The year (Anno Domini) the character was born. You can then calculate their age at any given year by subtraction¹.

Footnotes

1. But because we don’t need to change this value every year, we don’t erase all the time and the sheet can’t fall out of sync because we missed an update one year. ↩