He was born in Alexandria into a Christian family which was neither “Coptic” nor Coptic Catholic, but Melkite Greek Catholic. The family was of Levantine descent.
They spoke Arabic and (like many upper-class Egyptian families) French (old post) and perhaps other languages. He spoke or learned Greek, Italian, Spanish and English. He converted to Islam in 1955 in order to marry his Sunni Muslim wife. He had a Jewish grandson. Obituaries.
St Anthony of Padua, an early Franciscan, took his name from St Anthony of Egypt.