Are you still looking for info? Anna's sister, Ernestine (1882-1986), is my great grandmother. I found a link that might be helpful to you:http://awt.ancestrylibrary.com/cgi-bin/igm.cgi?op=GET&db...
I saw on a different thread that you've been looking in Scotland. However, apparently our Duff/Dufft family traces back to Germany (news to me!)