[annalex]

You have no direct evidence concerning your grandfather nor is there any direct evidence concerning the Perpetual Virginity of Mary.

In both cases someone I trust told me of certain facts and I trust the source. I trust my grandfather and I trust my Church, and I am happy to tell you of these facts as facts. Whether you believe them or not is not a concern of mine; as the Gospel says, there are people who won't believe even if someone came from the dead and told them.

[metmom]

In both cases someone I trust told me of certain facts and I trust the source. I trust my grandfather and I trust my Church, and I am happy to tell you of these facts as facts.

Facts may indeed be facts, but there are no facts concerning the perpetual virginity of Mary. There's just hearsay and opinion, not even remotely supported by Scripture.