Elizabeth / Jean

This looks credible , except can't find any sign of the children's births , including Jean on the IOM , looked for all Thomsons on the IOM for other Christian name of Jean , and there is nothing there .
If you look for births , (any)Thomson , Markinch in the period 1815-1840, and there are plenty , but none that match.
This is going to be difficult.
Cheers
David