I can trace my fathers ancestors back to my great great-grandfather, but I cannot find records for William Young and Sarah Bradford.
my father: Joseph Harold Young
Birth 02 May 1907 in Moline, Rock Island, Illinois, USA
Death 29 Nov 1989 in Detroit, Wayne, Michigan, USA
wife:
Lora Erlene Powell
Birth 07 July 1912 in Pineville, Rapides Parish, Louisiana, USA
Death 26 July 1980 in Detroit, Wayne, Michigan, USA
father:
Joseph Harry Young
Birth 04 April 1878 in Murphysboro, Jackson, Illinois, USA
Death 07 Sep 1954 in Detroit, Wayne County, Michigan, USA
his wife and mother of Joseph Harold
Hattie Irene (Harriet) Lamb
Birth 24 Sep 1886 in Creston, Union, Iowa, USA
Death 1 Jan 1968 in Detroit, Wayne, Michigan, USA
grandfather Joseph Henry Young
Birth 4 Apr 1853 in East Moline, Rock Island, Illinois, USA
Death 4 Oct 1930 in 712 16th Avenue East Moline, Rock Island, Illinois, USA
wife of Joseph Henry and grandmother of Joseph Harold Young
Sarah Ann Farry (Ferry)
Birth 3 Oct 1856 in Schuylkill County, Pennsylvania,USA
Death 7 Feb 1934 in Dayton, Montgomery County, Ohio, USA

on the death record of Joseph Henry Young his parents are listed as William Young (PA) and Sarah Bradford
great grandfather William Young and his wife, great grandmother of Joseph Harold, Sarah Bradford
William Young and Sarah Bradford married 29 October 1843 in Vermillion, Ohio, USA