The Collaborative International Dictionary of English v.0.48:

Ryal \Ry"al\ (? or ?), a.
   Royal. [Obs.] --Chaucer.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Ryal \Ry"al\, n.
   See Rial, an old English coin.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Rial \Ri"al\, n. [From Royal.]
   A gold coin formerly current in England, of the value of ten
   shillings sterling in the reign of Henry VI., and of fifteen
   shillings in the reign of Elizabeth. [Spelt also ryal.]
   --Brande & C.
   [1913 Webster]