Duckett of Shropshire

I am looking for the siblings of Constance Mary Hyde nee Duckett 1899-1988 the daughter of John Duckett and Anna Perry

She is the Nan of my own Nan and once told my Nan how she one of 13 siblings, after doing research I have found a 1901 as well as a 1911 Census from when they lived in Shropshire, England which I found the names of

Percy William Duckett 1896-1960
Edith Gladys Duckett 1897-1906
Constance Mary Duckett 1899-1988
Leonard Jack Duckett 1901-1974
Arthur Robert Duckett 1904-
Gertrude Ellen Duckett 1906-1984
Reginald James Duckett 1909-1988

But I cannot find out about the missing 6 siblings, my Nan remembers a Harry being mentioned as well as a Bertha who died around 1962

Any information would be appreciated thank you very much