The only Shanklin family in Wigton seems to be the one below - albeit Henry/Harry Shanklin is not with them.
1861 Abbey Holme Wigton Cumberland
RG 9; Piece: 3928; Folio: 105; Page: 10;
John Shanklin 47 Born Ireland. Ag. Lab.
Catharine Shanklin 44 Born Ireland.
John Shanklin 17 Born Ireland. Tailor.
Eliza Shanklin 14 Born Ireland
Robert Shanklin 10 Born Ireland.
Jesse Shanklin 7 Born Bromfield, Cumberland.
Gilbert Shanklin 4 Born Bromfield, Cumberland.
https://www.familysearch.org/ark:/61903/1:1:M7LT-VNQGilbert born 6 July 1856 Bromfield.
Father John Shanklin passed away Q4 - 1868 - aged 55 years - Wigton - 10b 331.
Mother Catherine Shanklin passed away Q3 - 1888 - aged 71 years - Wigton - 10b 286
Daughter Jessie Shanklin passed away Q2 1877 - Wigton - aged 23 years - 10b 337.
Although the census said Robert was born Ireland - there is a baptism record 26 September 1850 - parents John Shanklin and Catherine.
1871 census Abbey Holme Cumberland.
RG10 Piece 5230 Folio25 Page 10
Catherine Shanklin 54 Widow.
John Shanklin 27 Tailor.
Robert Shanklin 15 Farm labourer.
Sandra