Need guidance on a slightly complpicated Merge

I need to merge the two Actress credits for Sophie Reinhard = www.imdb.com/name/nm4436682/  from among the Art 
Department credits on her page with those of Sophie Reinhart = www.imdb.com/name/nm10353740/ who has only Actress credits. I suspect, but don't know, that the first Sophie is a different person entirely; but the Actress credits on her page belong definitely to the second Sophie.
How do I go about this? (I already executed a full Name Merge to join Sophie Reinhart (II) with Sophie Reinhart(I), these being the same actress.)
Any help gratefully received.
                                                        hutch48