Name, estimated year of birth, place of birth, from the 1901 England Census taken on the night of 31 March 1901 for Boyton Civil Parish in Cornwall, England found in March 2023:
House: Tala Stone
Richard Parnell, Head, Married, age 48, Traction Engine Driver, Own account, born Boyton Cornwall England [Born circa 1853]
Mary Grace Parnell, Wife, Married, age 44, born Northcott Hamlet Devon [Born circa 1857]
Sophia P Parnell, Daughter, age 15, born Boyton Cornwall England [Born circa 1886]
William Parnell, Son, age 13, At School, born Boyton Cornwall,England [Born circa 1888]
Walter Parnell, Son, age 2, born Boyton Cornwall England [Born circa 1899]
John Walters, Brother-in-law, Single, age 48, Living on own means

Entry in the 1911 England Census taken on the night of Sunday, 2 April 1911 for Boyton Civil Parish in Cornwall, England found in March 2023:
House: 5 rooms not counting any scullery, landing, lobby, closet, bathroom, at Boyton, Launceston
Richard Parnell, Head, Married, age 58, Widower, Steam Thrashing, Employer, born Boyton Cornwall England [Born circa 1853]
Sophia P Parnell, Daughter, age 25, Single, born Boyton Cornwall England [Born circa 1886]
John Parnell, Son, age 19, Single, Traction Engine Driver, Employed, born Boyton Cornwall [Born circa 1892]
Walter Parnell, Son, age 12, school, born Boyton Cornwall,England [Born circa 1899]

The Family Tree by Peter Goss has this Walter marry “Mary Frances Louise BIRD” on 19 Apr 1933 and they had a daughter “Margaret J PARNELL” born 6 Apr 1935. Brian of nzolivers yet to confirm.
Peter Goss is the eldest son of Elfrida Ruth Geddes. Elfrida Is the great-granddaughter of Francis Oliver (b.1840).