- Father: John KILLEY
- Mother: Catherine QUAYLE
- Birth: 3/28/1837, Castletown, St. Marys, Isle of Man
- Arrival: 1857
- Arrival: 1860
- Residence: 1880, Lenox, Warren, Illinois, United States
- Residence: 1900, Lenox, Warren, Illinois
- Residence: 1910, Monmouth Ward 3, Warren, Illinois
- Death: 4/11/1920, Monmouth, Warren, Illinois, United States of America
Ancestors of William KILLEY
/-John KILLEY
/-Henry KILLEY
| \-Catherine CROW
/-Henry KILLEY
| | /-Thomas KAIGHIN
| | /-John KAIGHIN
| | /-Patrick KAIGHIN
| | | \-Margaret
| | /-John KAIGHIN
| | | | /-Thomas CORKAN
| | | \-Joney Corkan
| \-Ellinor KAIGHIN
| | /-Patrick CORJEAGE
| | /-Thomas CORJEAGE
| \-Bahee CORJEAGE
| \-Charlotte MYLLICARNE
/-John KILLEY
| | /-Patrick SAYLE
| | /-John SAYLE
| | /-John SAYLE
| | | | /-Dollin CAINE
| | | \-Elinor CAINE
| | | | /-ADAM CALISTER
| | | | /-Gilbert CALISTER
| | | | | \-MABLE CAINE
| | | \-Christian CALLISTER
| | | | /-DONALD CORLETT
| | | \-JANE CORLETT
| \-Christian Sayle
| | /-Sylvester CLARKE
| | /-Gilbert CLARKE
| | | \-Alice Corlet
| \-Jony CLARKE
| | /-William QUAYLE
| \-Christian QUAYLE
| \-Jony HARRISON
/-John KILLEY
| | /-Richard COWLEY
| | /-Gilbert COWLEY
| | | \- BAHEE
| | /-Thomas Knockbane COWLEY
| | | \-Mary COWIN
| | /-Patrick COWLEY
| | | | /-Thomas KAIGHIN
| | | | /-John KAIGHIN
| | | | /-John KAIGHIN
| | | \-Esther Easter KAIGHEN
| | /-Patrick COWLEY
| | | \-Margaret FARGHER
| \-Elinor COWLEY
| | /-Tho SHIMMIN
| \-Ann SHIMMIN
| \-Elizabeth QUILLIAM
William KILLEY
| /-Thomas QUAYLE
\-Catherine QUAYLE
| /-Henry CLUCAS
\-Jane CLUCAS
\-Margaret COSTAIN