Saint Patrick lived during the 5th century, roughly from around 385 to around 461 CE, although the exact dates are not certain.

Historians generally place:

  • His birth around 385–387 CE in Roman Britain or nearby.
  • His main missionary work in Ireland in the second half of the 5th century, when he helped spread Christianity there.
  • His death around 461 CE, traditionally on March 17, the date now celebrated as Saint Patrick’s Day.

In short, Saint Patrick lived roughly from the late 4th century into the mid-5th century CE.