FindMyPast baptisms (image/transcript)
Samuel Onions, base son of Elizabeth Onions, bap 20 Nov 1814, place Weston, Parish of Weston under Lizard (Stafford). This is within spitting distance of Shifnal.
So, how to (a) rule him out or, better still (b) establish link to Priscilla?
Note that naming "convention" links his mother to Priscilla's daughter.