Do you know if Philip was born about 1842? If so it may be he in 1860 in NYC with an Owen Hamill and his family. Maybe Owen was a cousin or an older brother. I have found that the name Owen Hamill usually shows up in County Louth or County Antrim. Been searching for my Owen Hamill for 12 years but he doesn't want to be found! If I find anything else about Philip I'll let you know.