Hello!
While working through to verify a few lines, I came across this profile. It seems quite likely this profile for Birgitta may be confused wit Ebba Erlandsdotter Bååt. Could you take a look at sources?
The adelsvapen for Erland Bååt would also seem to have the dates off by approximately a century in either direction, depending on which Erland Bååt is causing confusion here. I think perhaps it is Erland Petersson, till Handelö (Bååt)
adelsvapen for reference: https://www.adelsvapen.com/genealogi/B%C3%A5%C3%A5t_nr_3
Thank you!
Karrie