Cast 

Doubling is possible

        Professor Bradwardine - (middle-aged or older)      
Young John Wycliffe - (around 16 years old)
Young Justin Chamberlain - (older teen)
Monks 1 &2
Jocelyn Chamberlain - (wife of Justin-twenties, age later)
 Young Dereck Chamberlain - (3-5 years old)
Caitlyn Chamberlain - (7-9 years old)
Old Lady
Beggar Boy
Rich Gentleman, wife and daughter
Penelope - (gossipy old lady with Cockney accent)
Minerva - (gossipy old lady with Cockney accent)
King Edward III
Older John Wycliffe - (age during play)
Duck of Huntington
Earl of Somerset
Doctor
Older Dereck Chamberlain - (teen, age to thirties)
Chancellor
Sir Edward Clifford
Gwendolyn Blake - (Dereck's wife, twenties, age to thirties)
Bishop Courtenay - Archbishop of London
Knyghton - monk
John of Gaunt - brother of Kind Edward III
Candace - noblewoman
Garrett - husband of Candace
Court Jester
Extra monks, court people, etc.