▁ 1 6 4 2 , ▁when ▁a ▁small ▁Royal ist ▁force ▁put ▁to ▁flight ▁a ▁smaller ▁Parliament arian ▁force . ▁ ▁The ▁second ▁Battle ▁of ▁Mod bury ▁occurred ▁on ▁ 2 1 ▁February ▁ 1 6 4 3 ▁when ▁the ▁Royal ists ▁forces , ▁expecting ▁an ▁attack ▁by ▁Parliament arian ▁forces ▁assemble d ▁at ▁nearby ▁Kings bridge , ▁had ▁fort ified ▁the ▁town . ▁Out number ed ▁approximately ▁four ▁to ▁one , ▁and ▁running ▁short ▁of ▁am mun ition , ▁the ▁royal ists ▁retre ated . ▁This ▁victory ▁was ▁largely ▁instrument al ▁in ▁the ▁lif ting ▁of ▁the ▁Sie ge ▁of ▁P ly mouth , ▁and ▁the ▁driving ▁of ▁the ▁enc ir cling ▁Royal ist ▁forces ▁into ▁Corn wall . ▁▁ 1 9 th ▁century ▁By ▁ 1 8 0 1 , ▁the ▁population ▁of ▁Mod bury ▁had ▁ris en ▁to ▁ 1 , 8 1 3 , ▁with ▁almost ▁half ▁engaged ▁in ▁the ▁w ool ▁trade . ▁The ▁impact ▁of ▁the ▁mechan isation ▁of ▁the ▁w ool ▁industry ▁was ▁to ▁have ▁a ▁dram atic ▁effect ▁on ▁the ▁economic ▁prosper ity ▁and ▁population ▁of ▁the ▁town ▁in ▁the ▁mid - 1 8 2 0 s ▁and ▁later . ▁Many ▁workers ▁left ▁the ▁town ▁and ▁head ed ▁to ▁large ▁cities ▁in ▁search ▁of ▁employ ment ; ▁others ▁left ▁the ▁country ▁altogether , ▁em igr ating ▁to ▁America . ▁ ▁The ▁railway ▁line ▁by pass ed ▁Mod bury , ▁contrib uting ▁still ▁further ▁to ▁this ▁decl ine . ▁Mod bury ▁remained ▁an ▁important ▁market