Hi James,
Looking at the 1871 Census I do note that William's parents were Cornish
RG10/5364 Folio 101 Page 1
Ely Road
Llandaff
Glamorgan WalesJULIAN William Head 33 Mar b Bodmin Cornwall Gardener
JULIAN Selina Wife 33 Mar b Little Petherick Cornwall
JULIAN John Son 11 b Little Petherick
JULIAN William Son 8 b Landaff Glamorgan Scholar
JULIAN George Son 6 b Llandaff Scholar
JULIAN Elizabeth Jane dau 3 b Llandaff
If this is your William b 1862 it would seem highly unlikely he would have lived until 1971ish

Cheers Kris
