I thought I might be able to eliminate the 22 year old by finding him in census, but your James aged 32 is the only one I can find
So it would appear they are 2 separate people, what a shame, but at least shows you can eliminate that death.
Ahhhhhhhhhh now I look just for Jas
this probably is the other in 1871
Parish S.KEVERNE; District 8; Schedule 027
Position Marital
Name in Family Status Age
BARKER, JAS Head M 53
BARKER, PRISCILLA Wife M 51
BARKER, JAS Son U 19
BARKER, PATIENCE Daughter U 16
BARKER, EMILY Daughter - 12