Shevlin's in the 1850 Census
The attached web pages list all Shevlin's found in the 1850 federal census. There were less than 100 individuals with the largest concentrations in New York and Pennsylvania.
Surname spellings, based on the the census index, include the following:
Shevalin, Shevalon, Sheveland, Shevelene, Shevelin, Shevilien, Shevilin, Shevlen, Shevlin, Shevolin, Shivelin, Shoveland, Shovlin