Hello Mable,
You won't need me tell you it's not easy to be sure we have the right one with a name like Smith...

But here goes..... "North Clifton is an Ancient Parish in the county of Nottinghamshire, other places in the parish include: Harby, Spalford, and South Clifton".
So if George
was christened at North Clifton the only one I could find in the right timeframe you have given is this one;
Baptism at North Clifton - 13th May 1804
George Shepherd SMITH, mother Sarah Smith
Regards
Sheila