Bernadette was 14 years old.
Bernadette was 13 years old at the time of the visions.
Saint Bernadette of Lourdes was 35 years old when she died.
Bernadette is the feminine form of Bernard (Bernhard), which is from the Old German for bear hardy, or "brave as a bear". A famous example is St. Bernadette Soubirous, who in 1858 had visions of the Blessed Mother at Lourdes and was canonized as a saint in 1933.
At what age did St. Bernadette do what? You need to explain yourself otherwise the question is meaningless.
Bernadette lived and died thousands of years after the Old Testament was completed and did not live in that period of history. She lived in the 19th century A.D.
She experienced her first vision around 1424 at the age of 12 or 13 years.
saint peter
Bernadette Peters is 69 years old (birthdate: February 28, 1948).
Bernadette Devlin is 64 years old (birthdate: April 23, 1947).
Bernadette Chirac is 78 years old (birthdate: May 18, 1933).
Isaiah is an Old Testament prophet and not accorded the title of saint. That title is usually reserved for those who were followers of Jesus Christ in the New Testament or to the angels.
Bernadette Soubirous was born on January 7, 1844 and died on April 16, 1879. Bernadette Soubirous would have been 35 years old at the time of death or 171 years old today.