I thought I would share here a summary of what I found that can be of general interest :
- Salli Kra (born Krah) was born 20 March 1853 in Frankfurt, Germany. He was the 4th child.
- From what I see in the original (handwritten) records, both his parents seem to have come from the town of Norden near Hanover.
- The father, Joseph Jacob, was a teacher in the jewish community
Wikipedia page on Simon (Salli) Kra : https://fr.wikipedia.org/
Notes on Lucien Kra, son of Simon Kra : http://vlecalvez.free.fr/
I've also privately sent Joyce more complete data.
Best Regards from Paris