After doing some research tonight, I found my great great great grandfather, living with a Ann Benedict and Charles G. Benedict in the 1850 census, in Perry, Wyoming, New York.
I don't believe Manley (listed as Miles Morris) is in any relation to this family, however I am intrigued by this. After doing some further research on the Benedict line, I believe I found Ann who passed away in 1907 and was born in 1821. Ann Rose Benedict.
If there is anyone out there who is in this line, and is familiar with Manley living with the Benedicts in 1850, I would greatly appreciate further information.
I currently presume that he was adopted, as his parents were named Ralph Morris and Lucinda Tryon according to his death certificate.