I didn't find anything specifically on William or wife Lydia but their son, George Gruber Trites, born 1801 in Pa. ended up in Canton Township, Fulton Co., Illinois. All of Georges children except one were born in Pa. Their last child, Susan B. Trites, was born 25 Dec 1846 in Fulton Co.,Illinois so must be about the time they moved there. No sign of his parents