Patrick (then known as Maewyn Succat) was born between 387 and 390 AD.
AD
He was born in/about 387 AD.
Saint Apollinaris the Apologist was born sometime in the 2nd century AD.
Saint Genevieve lived in the 5th century AD.
BC. He was born in 570 BC.
Joseph was born about the middle of the first century BC. and died before 30 AD. No dates are known.
ad
Saint Joseph is believed to have lived in the first century AD. His exact dates of birth and death are not known, but it is generally accepted that he lived during the time of Jesus Christ.
bc
AD
We have no dates but Mary was probably born about 15 BC and died sometime in the second half of the first century AD.
BC is the time before jesus christ was born therefore BC is BEFORE CHRIST and AD refers to the time after christ was born
Peter was probably born about the year AD1. The date is unknown.