A priest friend of mine, who happens to be a Latin Catholic, has given me print of an Icon of St. Seraphim of Serov that he painted. I am not sure if I am comfortable venerating a non-Catholic saint even though I know he is on the Eastern Catholic Calander. However, I have not made a final judgement on the issue. Can anyone point me to a good resource on the life of St. Seraphim?
If he's on the calendar of an Eastern Catholic Church (which he indeed is, bless the Lord!), then he is, for all intents and purposes, a "Catholic saint". To paraphrase St. Augustine of Hippo, Rome has spoken, the matter is settled.
I have a strong devotion to St. Seraphim. I've always liked Valentine Zander's "St. Seraphim of Sarov"
which apparently can be read on googlebooks, even though it says that there are pages removed. Just click on the "Preview this book" tab and there it is, albeit in a rather clunky and not-so-easy-to-read format. "The Little Russian Philokalia" has a good hagiography as well, I think. I can't remember who publishes that off the top of my head, though.