▁and ▁politician ▁who ▁was ▁a ▁member ▁of ▁parliament ▁for ▁nine ▁years . ▁He ▁regarded ▁himself ▁as ▁a ▁' C ass andra ' ▁( one ▁whose ▁prop he cies ▁were ▁true ▁but ▁never ▁believed ), ▁and ▁he ▁was ▁described ▁by ▁one ▁observer ▁as ▁" an ▁ecc ent ric ▁man ▁of ▁considerable ▁personal ▁charm ▁and ▁e got ist ical ▁obst in acy " ▁who ▁had ▁failed ▁to ▁prove ▁it ▁was ▁possible ▁to ▁be ▁both ▁a ▁Conserv ative ▁and ▁Independent ▁MP ▁at ▁the ▁same ▁time . ▁ ▁Family ▁and ▁education ▁Johnson ▁was ▁from ▁a ▁Lanc ash ire ▁family ▁and ▁was ▁sent ▁to ▁Ch el ten ham ▁College ▁( an ▁Independent ▁school ), ▁where ▁he ▁did ▁well , ▁and ▁Gon ville ▁and ▁C ai us ▁College , ▁Cambridge , ▁where ▁he ▁read ▁medicine ▁and ▁obtained ▁a ▁first ▁class ▁hon ours ▁degree . ▁Inter ested ▁in ▁entering ▁the ▁profession ▁of ▁medicine , ▁he ▁went ▁on ▁to ▁St ▁Bar th ol ome w ' s ▁Hospital ▁on ▁an ▁En tr ance ▁Sch olar ship . ▁ ▁Donald ▁Johnson ▁was ▁married ▁twice ▁and ▁father ed ▁three ▁children , ▁two ▁boys ▁and ▁a ▁girl ▁( Car ol ). ▁One ▁of ▁his ▁sons ▁was ▁Christopher ▁Louis ▁Mc Int osh ▁Johnson . ▁His ▁second ▁wife , ▁Betty , ▁whom ▁he ▁met ▁at ▁the ▁Mar l borough ▁Ar ms ▁( see ▁below ), ▁died ▁in ▁ 1 9 7 9 . ▁ ▁Early ▁career ▁In ▁ 1 9 2 6 ▁Johnson ▁qualified ▁as ▁a ▁doctor . ▁His ▁first ▁medical ▁job ▁was ▁as ▁Medical ▁Officer