Dan or Daniel Carswell

Hello. My name is Anne Beadle.
I am trying to find some information on Dan Caswell from Bilsly Gloucester.who married a Sarah Bolton fo Beauchamp Roding Essex, in the early 1700's. He would be my Grandfather 4 times removed.
We are trying to find Daniels fathers name also, as he is the link we need for the Scottish Carswells . Daniels father died in the service of the King in America so we read in the back of a family bible. It i
It was in the 1600's in the reign of Charles 1 that the Carswells 'Migrated to Gloucester we think.
I do hope you shed some light on the family mystery!
Yours most gratefully
Anne Beadle