I am seeking a record of the birth of my grandmother who was born in Vienna in 1907. She was illegitimate. Her mother and father were probably from Dublin/London. I believe her mother was originally from a German family which emigrated to New York around 1880. The family prospered in America and Frieda Ottman (probably my g grandmother) moved to Dublin where she married into an upper class family. I believe that she had an affair (possibly with a member of the Gunn family) and in 1907 went to Vienna to give birth discretely. She returned to Dublin with her daughter named Joyce Frieda Dehmel (or Demel). Later her daughter took the name Gunn. Date of birth is stated as 10/7/1907 but this might be American format = October 7, 1907 or European = 10 July, 1907. Any help or local contact would be most welcome.