As is the sepulchre in stubborn Jewry

What did Mr. Spear mean by this?

It might be a reference to Act 2 Scene 1 of The Life and Death of Richard the Second where John of Gaunt says this. The phrase itself is fairly clear “sepulchre” is a tomb, and “Jewry” is the Jewish faith (or possibly some bangles).

Unfortunately, I have no idea of the original piece you are referencing. What are you talking about?

I think you’ll find “Jewry” in this context is a place, rather than the Jewish faith. Possibly Jerusalem.

Who is Mr. Spear?

Just had a thought: “Mr. Spear” wouldn’t be Shakespear, would he?

Or is it the guy who married Britney in Vegas?

Try reading it this way:

The English are renowned, as far away as Jerusalem. For what? For Christian service and true chivalry.

Just to expand on what Nametag said: it means that the Kings of England are famous in distant parts of the world.

But let’s not be modest about it or anything.

Not only are they famous, they are as famous as Jesus Christ!

Jesus’ tomb (he is the ransom, blessed Mary’s son) is located in the Jews’ land (they are referred to as stubborn because they refuse to accept salvation), and the “tomb” itself is famous because reference to the tomb includes as a corollary the resurrection therefrom.

If you’re doing hyperbole, might as well go all the way.