sorry I confused 2 generations and picked on wrong James -

in 1851 Robert Bruce is with wife Ann Christian (dau of Charles Christian) m at Bride 1848-05 -06 at Cranstall with James age 8 - Robert gives birth parish as Malew -
I thought that Robert maybe son of John (wm John in one entry) Bruce + Margt Wilson (as margt is most likely visiting Robert in 1851 - entry gives margt bruce age 77 born Scotland).
Robert was most likely bapt Mal 1813-10-01 - there is a confusing entry in the igi with fa given as robt and mother Mary and name John Robert - this looks like the Robert in Bride and matches age but the date is too close to a previous child James of John + Margt Bruce so I'm not sure who his parents were but seemingly related to Margt Bruce.

Exactly whose child James born in 1843 is I'm not sure - Ann Christian is only 25 in 1851 and thus unlikely to be the parent tho indicated as grandson to charles christian and as born andreas.