▁J ama ica , ▁was ▁a ▁phys ician ; ▁his ▁mother ▁was ▁a ▁daughter ▁of ▁Colonel ▁C orm ack ▁or ▁C amm ack . ▁ ▁Family ▁background ▁Dr . ▁Robert ▁Dallas ▁came ▁to ▁J ama ica ▁from ▁Scotland ▁around ▁ 1 7 3 0 . ▁His ▁first ▁wife ▁was ▁Mary ▁Frances ▁Main , ▁daughter ▁of ▁Samuel ▁Th emer ▁Main , ▁a ▁merchant ▁of ▁King ston . ▁Robert ▁Charles ▁Dallas ▁was ▁born ▁ 1 4 ▁July ▁ 1 7 5 4 , ▁the ▁son ▁of ▁Robert ▁Dallas ▁and ▁Sarah ▁H ew itt ▁n ée ▁C amm ack , ▁who ▁had ▁married ▁John ▁H ew itt ▁in ▁ 1 7 5 1 ; ▁Robert ▁Charles ▁was ▁therefore ▁il leg it imate , ▁and ▁his ▁parents ▁married ▁in ▁ 1 7 6 9 , ▁in ▁England , ▁after ▁John ▁H ew itt ' s ▁death . ▁ ▁One ▁of ▁his ▁brothers ▁was ▁Alexander ▁James ▁Dallas ; ▁there ▁were ▁at ▁least ▁two ▁other ▁brothers ▁( one ▁possibly ▁a ▁half - bro ther ) ▁and ▁two ▁sister s ▁in ▁the ▁family . ▁His ▁father ▁died ▁in ▁ 1 7 6 9 . ▁His ▁will ▁left ▁his ▁estate ▁to ▁his ▁wife ▁Sarah . ▁Dr . ▁Dallas ▁bought ▁the ▁Bo ar ▁Castle ▁estate ▁on ▁the ▁C ane ▁River , ▁J ama ica ▁in ▁ 1 7 5 8 , ▁changing ▁its ▁name ▁to ▁Dallas ▁Castle . ▁He ▁left ▁the ▁island ▁in ▁ 1 7 6 4 , ▁having ▁mort g aged ▁the ▁estate ▁and ▁put ▁it ▁in ▁a ▁trust .