Hi aghadowey
That's right Peter Butler (Drayman) born C. Kildare, father Peter Butler (Land Steward).
Peter junior died in NSW Australia and info was given by his son Peter.
He isn't in the IGI but some of his children are, from the civil registration but born in Dublin.
The two Peter's i checked (1836 & 1840) were on the pay to view site, Kildare Genealogy that patcurragh gave me.
Not sure if all christenings for Kildare are on the site so probably a premature assumption if not all listed.
Death cert says Roman Catholic if that makes any difference.
Hope this isn't too confusing