Born in
Chicago,
Illinois Gabro was ordained a priest for the
Apostolic Exarchate of United States of America on September 27, 1945.
Pope John XXIII named him as the bishop of St. Nicholas of Chicago on July 14, 1961. He was ordained a bishop by Archbishop
Ambrozij Andrew Senyshyn,
O.S.B.M. of Philadelphia on October 26, 1961. The principal co-consecrators were Bishop
Isidore Borecky of
Toronto and Bishop
Joseph M. Schmondiuk of
Stamford. He attended all four sessions of the
Second Vatican Council (1962-1965). Gabro served the eparchy as its bishop until his death on March 28, 1980, at the age of 60. ==References==