I have learned that I'm a descendant of Rabbi Jechiel of Porto, born about
1455. He had sons: Eliezer ULMO and Abraham, who became GUENZBURG after
the family migrated to Bavaria. They seem to be the ancestors of my
BISSINGER family of Ichenhausen.
Anyone with detailed information about the Portuguese period of this family
or the Jews of Porto before and during the expulsion should please contact
Jim Bennett, Haifa