Robert Steele or Kinley (or Cain)

My first reference to a Robert Cain b abt 1835 was in the 1841 IOM Census for Marown.

I looked for a birth for Robert, Mother Christiana and father Thomas. The closest I could find was in the LDS (extracted birth or christening) records. Robert Kinley or Steele, mother Chris Kinley or Steele and father Thomas Caine.

As Christiana had previously been married to a John Steele, who had died between 1828 and 1834, the names add up. Christiana married Thomas Cain in 1839, so Robert was born before they had married (which could account for the surname confusion).

Question is - which surname did he use throughout his life? The 1841 Census indicates he could have been using the surname Cain(e). He doesn't appear with his parents in the 1851 census.

Could a look up be done for Robert (b 1834 in Marown) in the 1851 Census? My guess is he was known by the surname Cain(e).