▁h il lock ▁from ▁where ▁the ▁river ▁and ▁the ▁valley ▁were ▁domin ated . ▁ ▁Its ▁present ▁name ▁der ives ▁from ▁the ▁name ▁of ▁Saint ▁Baud ilus , ▁known ▁as ▁Bo i ▁or ▁Bald iri ▁in ▁Catal onia . ▁ ▁During ▁the ▁Middle ▁A ges ▁the ▁village ▁was ▁progress ively ▁populated , ▁growing ▁from ▁the ▁surr ound ings ▁of ▁the ▁castle ▁to ▁adjacent ▁zones . ▁A ▁bar o que - style ▁church ▁was ▁built ▁during ▁the ▁ 1 6 th ▁century . ▁The ▁growth ▁kept ▁on ▁during ▁the ▁following ▁centuries , ▁giving ▁rise ▁to ▁numerous ▁" M as ies " ▁( typ ical ▁Catal an ▁agricult ural ▁housing ) ▁near ▁the ▁river ▁and ▁the ▁most ▁fert ile ▁lands . ▁At ▁the ▁end ▁of ▁the ▁ 1 9 th ▁century ▁Sant ▁Bo i ▁was ▁a ▁village ▁of ▁nearly ▁ 5 0 0 0 ▁inhabitants , ▁with ▁an ▁economy ▁mainly ▁based ▁in ▁agricult ure . ▁ ▁At ▁the ▁beg inn ings ▁of ▁the ▁ 2 0 th ▁century ▁the ▁first ▁indust ries ▁fl our ished ▁in ▁Sant ▁Bo i , ▁r anging ▁from ▁brick ▁manufact ure ▁to ▁metal work . ▁With ▁the ▁end ▁of ▁the ▁Spanish ▁Civil ▁War ▁in ▁ 1 9 3 9 ▁there ▁is ▁a ▁massive ▁in flow ▁of ▁imm igration ▁coming ▁from ▁diverse ▁points ▁of ▁the ▁Spanish ▁ge ography . ▁These ▁flows ▁of ▁population ▁consisted ▁mainly ▁in ▁people ▁from ▁villages ▁and ▁small ▁towns ▁searching ▁a ▁job ▁and ▁career ▁opportun ities ▁in ▁the ▁town ▁of ▁Barcelona , ▁stim ulated ▁by ▁the ▁increasing ▁demand