Wigstan's grandfathers were Wiglaf and Ceolwulf I; the tradition might be interpreted to mean that Wiglaf descended from Penda, but it might also be Wiglaf's wife, Cynethryth, who was descended from Penda.
Os avós de Wigstan foron Wiglaf e Coelwulf I; a tradición pode ser interpretada como que Wiglaf descendía de Penda, pero tamén podería ser que fose a esposa de Wiglaf, Cynethryth, quen descendese de Penda.