I have Kewley's from Douglas too that parallel yours. They also extended into Liverpool. I have holes galore, so if you find out anything about your Thomas, please let's share it.

I'm descended from Robert KEWLEY and Isabella DAWSON md 1762 Braddan. They had 8 children. Their son Charles (1773-1861) was a Barber in Douglas and married Judith (or Joney) QUAYLE 1798. I have made some progress with their 10 children but little on the previous generations. Their (Chas & Judith) daughter Catharine b 1810 m William GELLING in Braddan but lived in Liverpool, and eventually a few generation later I appear.