My father was Giovanni Tallarida. He apparently had a relationship with a German woman in ?Hamburg.? And had a daughter ..May be called Maria.she would be under 53 years old. Can anyone help? He has a family in Italy and family in Australia.
This may be a near impossibility; it seems unlikely that birth records from this era are available to the public.
I could suggest that you start a Facebook campaign (you know, one of those things which thousands or millions of people cross-post) but you have to consider how your sister might feel about such before proceeding.
Is there a possibility that someone in your father's family may have additional details?
My hobby is finding things. Having found most of my own, I am happy to help others find theirs. PM me!