Family name - 'Murdoch.'

Researching in particular Robert Murdoch born at Dalsallock in 1793 - married to Agnes Templeton born 1791 - died 24.05.1871 at Auchinleck. Looking to confirm the said Robert Murdoch's parents - and beyond?

(I think there could be a 'link' with a David Murdoch born in 1762 at Auchinleck - died 29.04.1829, who married an Elizabeth Campbell who was born in 1771 and died in 1811?)

Also,information concerning James Murdoch ('Jimmy') - born 28.12.1851 at Auchinleck - son of Robert and Agnes.