NameLydia 
Birthabout 1835
Spouses
Birthabout 1832, Buffalo Twp, Union Co, PA
DeathKansas
Parent-Proof notes for Lydia
The CBR says Peter married Lydia and in 1870 his wife was indeed Lydia. Then in 1880, she was named Ida as was their oldest daughter -- so I think Peter's wife was Lydia aka Ida.
Birth, Parent-Proof, Designation notes for Peter (Spouse 1)
Jacob named son Peter in his will. He is designated P5c3.
Relocated and Census Tracking notes for Peter (Spouse 1)
Peter is found in 1870 in East Buffalo Township and then in 1880 in Kansas. Peter moved to Kansas sometime after 1874 when Maggie was born in PA according to Census and before 1880.
Death and Find-a-Grave notes for Peter (Spouse 1)
As of summer 2015, Peter is not on find-a-grave.