no earlier regs as civil reg only started 1877/8 - can't see any bapts for James senr in c.1850 if census info correct
if the marriage was in England then yes the father's name is given - however Elizth looks very young for marriage though this was more usual in poor Irish families.

a car driver is usually fairly poorly paid and often it seems worked for an owner

Many(most ?) Irish records were destroyed in their civil war in 1922

can't see any burial for Samuel or Margt on IoM

again try www.imuseum.im