I have just Googled Milton Abbot baptisms 1724-1812.
William Hobbs,s/o William and Alice, baptised 4 Feb 1810. Also Mary Ann, baptised 29 Mar 1807. Yours?
P S. Perhaps this William may have died and a later son then named William. It may be worthwhile you making contact with Philippa Stout, Online Parish Clerk (O P C), Milton Abbot