Gosodwyd mewn amser mor bell yn ôl na all neb yn cofio!
Llawn hwyl ac antur... dirgelwch a rhamant!
Mae Tad-cu Gwil, yr hen saer hoffus, yn cael breuddwyd mwyaf rhyfeddol!
Ymuno ag e ar ei antur pen-blwydd a rhannu yn ei holl lawenydd a hapusrwydd!
Mae argraffiad Saesneg o'r stori hon hefyd ar gael a fe'i gelwir Grampa Wil's Most Wonderful Dream.

Set in a time so long ago no one can remember!
Full of fun and adventure... mystery and romance!
Grampa Wil the lovable old carpenter has a most wonderful dream!
Join him on his birthday adventure and share in all his joy and happiness!
A English language edition of this story is also available and is called Grampa Wil's Most Wonderful Dream.