Hi Mariona,
Sorry for my delayed reply, I've got a sick, teething bub and I haven't been online much. I'm definitely interested in knowing more about my ancestors! All going well, I'm hoping to get the photo done for you this week.
I also spoke with my Nan again and she mentioned that she thought that Krygger was at one point "De Krygger" possibly with one "g". Actually, she's pretty sure along that line of questioning.
Looking forward to hearing back from you,
CJ