lier , ▁with ▁whom ▁he ▁became ▁a ▁partner ▁for ▁a ▁while . ▁He ▁assist ed ▁Car lier ▁at ▁Saint - N icol as - des - Ch amps ▁between ▁ 1 6 3 4 ▁and ▁ 1 6 3 5 , ▁when ▁he ▁branch ed ▁out ▁on ▁his ▁own . ▁In ▁ 1 6 3 6 ▁he ▁married ▁Mar guer ite ▁L ec ler c , ▁sister ▁of ▁the ▁organ ist ▁at ▁the ▁Gr ands ▁August ins ▁church . ▁She ▁gave ▁him ▁a ▁son ▁in ▁ 1 6 4 2 ▁who ▁was ▁named ▁Charles ▁in ▁honor ▁of ▁his ▁god father , ▁Charles ▁R ac quet , ▁the ▁famous ▁organ ist ▁of ▁Notre ▁D ame ▁de ▁Paris . ▁ ▁With ▁the ▁success ive ▁death s ▁or ▁ret irement ▁of ▁C res pin ▁Car lier , ▁Pierre ▁Le ▁P es che ur ▁( 1 6 3 6 ) ▁and ▁Val é ran ▁de ▁H é man ▁( 1 6 4 1 ) ▁ ▁Pierre ▁Th ier ry ▁became ▁able ▁to ▁domin ate ▁the ▁Paris ian ▁market . ▁He ▁worked ▁in ▁Paris ▁at ▁Notre ▁D ame , ▁Saint - Jean ▁and ▁Saint - G erva is , ▁where ▁he ▁upgrad ed ▁the ▁organ ▁in ▁ 1 6 4 9 ▁and ▁again ▁in ▁ 1 6 6 1 . ▁His ▁organ ▁at ▁Saint - Paul ▁in ▁Paris ▁( 1 6 4 4 - 1 6 4 6 ) ▁combined ▁the ▁F lem ish ▁style ▁that ▁had ▁become ▁popular ▁in ▁northern ▁France ▁with ▁the ▁more ▁modern ▁French ▁style