▁Union ▁and ▁E man cip ation ▁Society . ▁In ▁ 1 8 6 5 , ▁Pot ter ▁entered ▁the ▁British ▁House ▁of ▁Commons ▁and ▁sat ▁as ▁Member ▁of ▁Parliament ▁( MP ) ▁for ▁Ro ch dale ▁until ▁ 1 8 9 5 . ▁He ▁was ▁a ▁Justice ▁of ▁the ▁Peace ▁for ▁Manchester ▁and ▁Lanc ash ire , ▁and ▁for ▁the ▁latter ▁also ▁Deput y ▁Lieutenant . ▁ ▁In ▁the ▁House ▁of ▁Commons ▁he ▁was ▁known ▁as ▁" Pr inci ples ▁Pot ter ". ▁ ▁He ▁established ▁the ▁Cob den ▁Club ▁in ▁ 1 8 6 6 ▁and ▁was ▁honor ary ▁secretary ▁until ▁his ▁death . ▁He ▁also ▁supported ▁Italian ▁Unity ▁and ▁was ▁a ▁personal ▁friend ▁of ▁Gar ib ald i . ▁ ▁He ▁married ▁first ly ▁ ▁Mary ▁As ht on , ▁daughter ▁of ▁Samuel ▁As ht on ▁at ▁the ▁Un itar ian ▁Chap el ▁of ▁Ge e ▁Cross ▁on ▁ 5 ▁February ▁ 1 8 4 6 . ▁She ▁died ▁in ▁ 1 8 8 5 ▁and ▁Pot ter ▁married ▁second ly ▁Hel ena ▁H icks , ▁daughter ▁of ▁John ▁H icks ▁at ▁St ▁Paul ' s ▁Church , ▁Lamb eth , ▁Sur rey ▁on ▁ 1 0 ▁March ▁ 1 8 8 7 . ▁Pot ter ▁had ▁four ▁sons ▁and ▁a ▁daughter ▁by ▁his ▁first ▁wife . ▁He ▁died , ▁aged ▁ 8 0 ▁in ▁The ▁Hur st , ▁Sus sex ▁and ▁was ▁buried ▁in ▁Hey sh ott ▁four ▁days ▁later . ▁ ▁At ▁the ▁end ▁of ▁his ▁life ▁Pot ter