Penn of Pennsylvania was the original British title of the economical biopic The Courageous Mr. Penn.  Clifford Evans stars as Quaker leader William Penn, who leaves the comfort of his family estate to fight for the rights of his religious brethren.  Penn's crusade for spiritual freedom leads him to the New World and the ultimate founding of the colony of Pennsylvania.

The film's highlight is Penn's courtroom trial, an admittedly overlong sequence redeemed by the give-and-take between actors Evans and Joss Ambler (as the judge).  Deborah Kerr is merely decorative in the thankless role of Penn's wife Gulielma.  Honorable in its intentions, Penn of Pennsylvania is compromised somewhat by its minimal production values, including some of the most unconvincing miniature work ever seen on film.