Francois Mauriac was not a Jewish convert. You may be thinking of Jacques maritain, who was a convert but not from Judaism though his wife Raissa, was a Jewish convert. Simone Weil died through self imposed starvation as a protest but it had nothing to do with the Jews. Simone Weil remained very negative in her ideas about Judaism.
Police on scene of shooting at Savannah State University campus in Georgia (Reuters)
from the article: 'He'd say kaddish for his mother'