It was probably these two overlapping Census entries which convinced me. Mary Ann, William and Joseph were all buried by then.

GR 1841 Census, Huntley Hill. All born in county

James GREEN, 50, Ag Lab.
Hester, 40,
Robert, 7,
Eliza, 5,
Comfort, 2,
Francis, 6m

GR 1851 Census, Huntley Hill

James GREEN, Head, Mar, 62, Ag Lab, b. Glos, Huntley
Esther, Wife, Mar, 54, Glos, Kemperley
Comfort, Daur, 12, Glos, Huntley
Frances, Son, 10, Glos, Huntley
Henry, Son, 7, Glos, Huntley
Emily, Daur, 1, Glos, Huntley