Rawle’s co-counsel in Negro Flora v. Joseph Graisberry was Jared Ingersoll a Pennsylvania delegates to the Constitutional Convention. Who learned about law at the Middle Temple in London. The same school Rawle attended.Another Middle Temple graduate was Charles Cotesworth Pinckney a South Carolina delegate to the Constitutional Convention (Pinckney also studied law under William Blackstone).
Another co-counsel in the Negro Flora case was William Lewis. Lewis preceded Rawle as the US Attorney for Pennsylvania.
So he was in good company with Pennsylvania lawyers.
He was also in good company in another case, as the US Attorney in the Henfield case which the jury acquitted. In that one Edmund Randolph (US Attorney General) was co-counsel,Alexander Hamilton, George Washington and Thomas Jefferson were all convinced Henfield should be prosecuted.
Another co-counsel in the Negro Flora case was William Lewis. Lewis preceded Rawle as the US Attorney for Pennsylvania.
I am familiar with all of them, and have been for several years. I'm getting the impression that you have just now made their acquaintance.
William Lewis was the Lawyer to whom Samuel Roberts (the guy who compiled that book mentioned earlier) was apprenticed. In those days, experienced lawyers taught younger lawyers, and William Lewis was the man who instructed Samuel Roberts in the law.