Margaret is quite correct, the first Charles Royall MINNS was born 1833 and died as a child. The second Charles Royall was born to John and Esther (Royall) 25th.October 1841 at Ditchingham, Norfolk. He is the one in the 1881 census at RG11 2096 104 55 at Longfleet, Dorset. His wife's name is shown as Mary but should be Mercy. They were the parents of my Grandfather shown as the 9 year old Robert. His full name was Robert John Royall MINNS. I do have the necessary certificates where possible.
The Charles MINNS you found in 1881 and 1901 were not Charles Royall MINNS.