Hi Dominique,
Thanks so much for your message! I am actually researching all three of the names you mentioned: Cueni, Laffer *and* Karrer. The information I have (which is sparse, I know) is as follows:
Anna Marie Cueni (dates unknown) married Ursi Laffer and they had (at least) one child: Magdalena Laffer (b. 4 Mar 1804 in Röschenz, Switzerland; d. 17 Mar 1891). Magdalena Laffer married Peter Karrer (b. 4 Mar 1801 in Röschenz, Switzerland; d. 12 Mar 1891) and they had 15 children. The oldest child of this union, Peter Karrer, married Caroline Cueni and had 6 children. I do not know the parents of this Caroline Cueni.
If you have any information on any of these lines or think you can help, I'd love to hear from you. Feel free to e-mail me directly at:
Search4Kin@hotmail.com and I truly look forward to hearing from you.
Take care,
Stephanie Sampson
Los Angeles, California