I'm here because while recently sorting through some of my deceased grandfather's belongings I came across a partial genogram pertaining to my deceased mother whom was adopted.

She is noted as "given middle (adopted/maiden) married [AdditionalName]" now throughout her life she knew she was adopted, but was told little to no information about her biological lineage.

Is it possible this addition name noted in brackets is potentially her Birth name? What else might the bracketed name mean?

I'm here because while recently sorting through some of my deceased grandfather's belongings I came across a partial genogram pertaining to my deceased mother whom was adopted.

She is noted as "given middle (adopted/maiden) married [AdditionalName]" now throughout her life she knew she was adopted, but was told little to no information about her biological lineage.

Is it possible this addition name noted in brackets is potentially her Birth name? What else might the bracketed name mean?

More info:

The diagram is not hand drawn, it is computer rendered but from which software I can not identify. This notation does not appear elsewhere. Not even for her other 3 siblings all of whom were also adopted. The adoption would have occurred in 1949 Massachusetts. As for other conventions - they are fairly basic; Surnames are uppercased, nicknames are double quoted, maiden names are in parentheses. Then oddly there is this one instance of [Additional Name].