Share 'the inquisitive party'

A choice encounter with a very inquisitive party who contacted me  nearly begging me to  volunteer my time in searching for a long lost Great~grandfather~So & So ,  [ who I located ] , despite the language barrier .So  without a shred of forthcoming information , I ask the relevant questions of who , what , when & where .... followed by I don't know ,  I don't know ,  I don't know &  …