I'm not sure if they were really two sons named James, or if one of the two has the wrong parents attached.
FamilySearch has some records for the one from Saint Blazey, and that's who the current parents are --- from Saint Blazey, Cornwall.
I'm worried that James Henry Rowe might not be from Saint Blazey, and thus has the wrong parents -- which are all over the place in public trees.
1) Which James Rowe was born in Saint Blazey to Ezekiel Rowe and Ann Rowe (Stocker)
2) Were their two sons named James? One was baptized in 1836 and the other in 1845 -- or did James get baptized twice?
3) Where was James Henry Rowe born, and can we confirm that he is a Son of Ezekiel Rowe and Ann Rowe (Stocker)