The Family Tree, as I know it from looking at the Census records.

William Benson (b~1823) married Agness (b~1840)

In the 1881 census,
they are shown as living at 86 Robin Hood Street, Nottingham, with the following children:-

Mary Agness Benson (age 18, b~1863)
Henry William Benson (age 14, b~1867)
John Peter Benson (age 7, b~1874))
Arthur James Benson (age 5, b~1876)

There were two other children
Elizabeth Benson (b~1860, married Oswald Garratt)
Susannah Benson (b~1881)

Henry William Benson married Annie M. (b~1864) and had a child, Edith M. Benson in 1890.
In the 1891 census, they are shown as living at 19 Dawson Street ?
In the 1901 census, they are shown as living at 86 Robin Hood Street (his fathers home) and his job as Employer & Machinist Manager.