William Dudley was born in Tompkins County New York 6 Jun 1830. He is in the Eaton and Martha Angell household (whose oldest son is named William) in Wayne County New York in the 1850 census. He is in the 1860 census for Seward Township, Kendall County IL living with the William and Mary Angell family.

Illinois Civil War Detail Report Name: DUDLY, WILLIAM Rank: PVT Company: G Unit: 129 IL US INF Personal Characteristics Residence: ODELL, LIVINGSTON CO, IL Age: 32 Height: 5' 8, Hair: DARK, Eyes: BROWN Complexion: DARK Marital Status: MARRIED Occupation: FARMER Nativity: ETHICA, TOMPKINS CO, NY Service Record Joined When: AUG 5, 1862, Joined Where: PONTIAC, IL Joined By Whom: A J CROPSY; Period: 3 YRS Muster In: SEP 8, 1862; Muster In Where: PONTIAC, IL Muster Out: JUN 8, 1865; Muster Out Where: WASHINGTON, DC Muster Out By Whom: CPT BEECHER

In the 1880 census for Odell Township, Livingston County he is single and still living in the William D. and Mary Angell household being listed as a cousin. He was probably also with this Angell family in the 1870 Odell census indexed as “Dudley William Angell”.

He died 22 (or 28) Oct 1891 in Livingston County and is buried in Odell Cemetery. I could not find his obituary.