@brantly I would be very careful to “note” this. For most adopted kids, there may also be baggage there… so making a kid feel “less than” and an asterick is calling attention to a situation that may not need additional attention. As an adoptee, I would be insulted if our family tree noted me as adopted and my brother as biological child. I realize it is more complicated than this, but they may not want attention drawn to it.
I would think asking the cousin how to handle it is the right way.
Plus…is there any chance at all that some attending this reunion do not know the back story about this family member living with relatives? If even one might not know…I’d definitely just not do this at all.
Maybe instead of this kind of formal poster, just have name tags and let everybody mingle and figure out the relationships themselves. Or if there really needs to be a poster, people that are coming could possibly submit pictures of their family groups in advance, with their own descriptions. I personally would not do a somewhat formal genealogical type poster here at all for a family reunion. Keep it fun and light. But, that’s just me. Whatever you decide to do, @brantly , hope you have a wonderful reunion!
I have many fond memories of having tea and toast with my Irish grandmother (first generation), my oldest daughter used to go as well. My grandmother who was born in Scotland live 3 blocks away and the only memories I have of that house is Christmas Eve.
I’d ask the niece, but I think it’s proper to list her as a daughter for this project.