Walkers UK to PA

my family roots are in heanor derbyshire,england.in 1838,john walker was brn in st marys nottinghamshire.he married mary a eggleshaw.among their sons were philip and abner walker who emigrated to the usa.they were naturalized.philip married gertude,and had children.but to my knowledge abner remained single.they lived in chester pa.abner doesnt apear with philips family in 1920 census.