There are 10 Moores in Lycoming County in the 1820 U.S. Census, and one in Clearfield.
There is one Oliver Moore listed in Pennsylvania in the 1830 census. He's in Erie County, in Venango township. But the census lists only heads of household. In the 1840census, there is no Oliver listed in the state. In the 1850 census, four are listed, one in Philadelphia county, Kensington Twp, Clearfield Twp., Karthaus Twp., and two in Allegheny County. Again, only head of household is identified. Can any of these be him? I'll check further if you can narrow it down for me.