1. From the 1891 UK Census, County Durham, Gateshead, Civil Parish of Gateshead, Municipal Borough of Gateshead, East Central Ward, St. James Parish, Page 40 and 41:
Matthew Gibson; Head; Age 36; Occupation - Chemical Works Laborer; POB Felling, Durham.
Harriet Gibson; Wife; Age 28; POB Albury, Staffordshire.
Elizabeth Gibson; Daughter; Age 6; Attends School; POB Felling, Durham.
Thomas Gibson; Son; Age 4; POB Felling, Durham.
Harriet Gibson; Daughter; Age 2; POB Gateshead, Durham.

2. 1910 US Census states Harriett Gibson was mother of 8 children, and 8 were still living. Since only seven children are listed in the 1910 Census, I must assume this child has already left the household and possibly married.