Little is known about this man and no matches have been on the 1901 Census of England Wales
In December 1916, Chailey Parish Magazine notes: Knight, Private D, 3/1st Sussex
The 3/1st Sussex Yeomanry was formed in Brighton in July 1915 and was affiliated to the 3rd Reserve Cavalry Regiment at Canterbury
The 2/1st Sussex Yeomanry had been formed in September 1914 and by January 1917 it had become the 8th (Surrey and Sussex Britain Ireland