This sibling to William is derived from the fact that an Esther Judge, niece (widowed) is resident with William Day in the 1881 census aged 67. Her maiden name may have been Day in which case she will have been the daughter of a brother of William. On the other hand her maiden name is unknown so she could be the daughter of a sister to William. Since William inherited the furniture business from Charles he is likely to have been the eldest son. Therefore, since Esther was only seven years younger than William I have assumed that her mother was William's older sister. [.] This sibling to William is derived from the fact that an Esther Judge, niece (widowed) is resident with William Day in the 1881 census aged 67. Her maiden name may have been Day in which case she will have been the daughter of a brother of William. On the other hand her maiden name is unknown so she could be the daughter of a sister to William. Since William inherited the furniture business from Charles he is likely to have been the eldest son. Therefore, since Esther was only seven years younger than William I have assumed that her mother was William's older sister.