For an excellent biography of Saint Ambrose that will explain why he is a saint, click on this link.
Saint Ambrose University was created in 1882.
Saint Ambrose of Milan was declared a saint by the early Church long before the canonization process was instituted. He was never canonized.
December 7 is the feat day of Saint Ambrose.
St. Ambrose baptized St. Augustine of Hippo.
Saint Ambrose of Optina was born on 1812-12-05.
Saint Ambrose of Optina died on 1891-10-23.
Ambrose was born about the year 340 AD.
There are churches named Saint Ambrose all over the world. You need to ask the pastor of the particular parish you are interested in.
Saint Anne was declared a saint in 1584. She is the grandmother of Jesus Christ as her daughter was Mary.
Saint Augustine of Hippo.
If you are referring to St. Marcellina, she was the sister of Saint Ambrose of Milan and Saint Satyrus,
Ambrose was born about the year 340 in Trier, southern Gaul (modern Germany).