▁was ▁English ▁former ▁debut ante . ▁His ▁parents ▁met ▁in ▁Paris ▁and ▁named ▁their ▁son ▁after ▁the ▁Hung arian - born ▁bank er ▁Á rp ád ▁P les ch ▁( 1 8 8 9 – 1 9 7 4 ), ▁who ▁not ▁only ▁was ▁Florence ' s ▁step - father ▁( he ▁was ▁the ▁second ▁husband ▁of ▁her ▁mother , ▁Mary s ia ▁U lam ▁Kra uss ▁Har court - Smith ), ▁but ▁had ▁also ▁been ▁her ▁step - grand father ▁( P les ch ' s ▁first ▁wife , ▁Le onie ▁Car o ▁U lam , ▁was ▁his ▁second ▁wife ' s ▁mother ). ▁P les ch ▁was ▁a ▁ment or ▁to ▁Italy ' s ▁rich est ▁man , ▁Gian ni ▁Ag n elli , ▁the ▁late ▁head ▁of ▁F iat . ▁Bus son ' s ▁a unt , ▁Jo anna ▁Har court - Smith , ▁was ▁a ▁companion ▁of ▁Tim othy ▁Le ary , ▁who ▁coinc ident ally ▁was ▁married ▁in ▁the ▁early ▁ 1 9 6 0 s ▁to ▁the ▁mother ▁of ▁Ar pad ' s ▁partner , ▁U ma ▁Th ur man . ▁ ▁Some ▁sources ▁have ▁suggested ▁that , ▁while ▁growing ▁up ▁in ▁France , ▁Bus son ▁made ▁early ▁prof its ▁s elling ▁to oth p icks ▁door - to - door ▁( which ▁he ▁den ies ), ▁but ▁he ▁was ▁educated ▁in ▁France ▁and ▁at ▁the ▁Institut ▁Le ▁Rose y ▁in ▁Switzerland . ▁He ▁then ▁served ▁national ▁service ▁as ▁a ▁medic ▁in ▁the ▁French ▁army , ▁where