I have tried to find George Mundell's parents (born 1812) married to Kezia Tharle (1807)
I found information on ancestry that Elizabeth Calloway born 1771 was the mother, however, she married a chap called William Mundell, I found the marriage date of 24/02/1789 of William and Elizabeth, in the England and Wales marriages, which seems to correlate where they lived in St Helens, Hampshire. William was born in 1761 but he doesn't appear to be correct father because he died in 1805 and George was born in 1812!