@#2: Many. I've recently retired from a career in psychology. In the 30 yrs. of practice, there were two on my caseload who were born to jewish mothers; during WWII, one five-year old was given to a polish catholic convent to be raised as a catholic; the other one was blonde-haired, blue-eyed, born on the wrong side of the Hapsburg blankets. Both worked at reconstructing their jewish identities through keeping the Feast Days of the Lord, as found in Leviticus 23.
Saudi-backed forces advance on rebel-held province in Yemen (DPA)
from the article: Princeton president uncovers family secret - that he is Jewish