- Father: Levi DAY
- Mother: Deborah COOK
- Birth: 1844, Porter, Oxford, ME
- Death: (Date and Place unknown)
Ancestors of William DAY
/-Timothy DAY
/-Joseph DAY
| \-Phoebe WILDES
/-William DAY
| \-Patience HILTON
/-William DAY
| \-Dorothy LITTLEFIELD
/-Levi DAY
| \-Lucy VARNEY
William DAY
\-Deborah COOK
Ancestors of William DAY
/-Timothy DAY
/-Joseph DAY
| \-Phoebe WILDES
/-William DAY
| \-Patience HILTON
/-David DAY
| \-Dorothy LITTLEFIELD
/-Jacob DAY
| \-Elizabeth NORTON
/-Ivory F. DAY
| \-Elizabeth PERKINS
William DAY
\-Lucy A. LITTLEFIELD
Ancestors of William DAY
/-Timothy DAY
/-Joseph DAY
| \-Phoebe WILDES
/-Benjamin DAY
| \-Patience HILTON
/-Samuel DAY
| \-Mary TAYLOR
/-Samuel DAY
| \-Sarah DREW
/-Isreal DAY
| \-Sarah WAKEFIELD
William DAY
\-Hannah HODSDON
Ancestors of William Augustus DAY
/-Timothy DAY
/-Joseph DAY
| \-Phoebe WILDES
/-William DAY
| \-Patience HILTON
/-William DAY
| \-Dorothy LITTLEFIELD
/-Alvah DAY
| \-Lucy VARNEY
/-Andrew Jackson DAY
| \-Sophionia EASTMAN
/-Eben Augustus DAY
| | /-Timothy DAY
| | /-Joseph DAY
| | | \-Phoebe WILDES
| | /-William DAY
| | | \-Patience HILTON
| | /-Nathaniel DAY
| | | \-Dorothy LITTLEFIELD
| | /-Stephen DAY
| | | \-Katherine PERKINS
| | /-Stephen DAY
| | | \-Lydia Ann PENDEXTER
| \-Clarinda DAY
| \-Harriet LINSCOTT
William Augustus DAY
\-Abigail MESERVE
Descendants of William Augustus DAY
1 William Augustus DAY
=Elsie May SAWYER
Ancestors of William C. DAY
/-Timothy DAY
/-Timothy DAY
| \-Phoebe WILDES
/-Abner DAY
| \- JEAN
/-Eliphalet DAY
| \-Susanna MARSHALL
/-Abner Langdon DAY
| \-Thirza FRENCH
/-Samuel A. DAY
| \-Susanna BRADLEY
William C. DAY
\-Amanda THAYER
Descendants of William C. DAY
1 William C. DAY
=Lois Louisa CURTIS