. ▁They ▁had ▁seven ▁children . ▁ ▁Political ▁career ▁ ▁Cont inental ▁Congress ▁ ▁Mu hlen berg ▁was ▁a ▁member ▁of ▁the ▁Cont inental ▁Congress ▁in ▁ 1 7 7 9 ▁and ▁ 1 7 8 0 , ▁and ▁served ▁in ▁the ▁Pennsylvania ▁House ▁of ▁Representatives ▁from ▁ 1 7 8 0 ▁to ▁ 1 7 8 3 . ▁He ▁was ▁elected ▁its ▁speaker ▁on ▁November ▁ 3 , ▁ 1 7 8 0 . ▁He ▁was ▁a ▁delegate ▁to ▁and ▁chairman ▁of ▁the ▁Pennsylvania ▁state ▁constitution al ▁convention ▁in ▁ 1 7 8 7 ▁called ▁to ▁rat ify ▁the ▁Federal ▁Constitution . ▁He ▁was ▁the ▁first ▁sign er ▁of ▁the ▁Bill ▁of ▁Rights . ▁ ▁U . S . ▁House ▁of ▁Representatives ▁ ▁He ▁served ▁as ▁a ▁member ▁of ▁the ▁U . S . ▁House ▁of ▁Representatives ▁from ▁Pennsylvania ▁in ▁the ▁first ▁and ▁the ▁three ▁succeed ing ▁United ▁States ▁Congress es ▁( M arch ▁ 4 , ▁ 1 7 8 9 ▁– ▁March ▁ 4 , ▁ 1 7 9 7 ). ▁Mu hlen berg ▁was ▁also ▁the ▁first ▁Spe aker ▁of ▁the ▁United ▁States ▁House ▁of ▁Representatives . ▁He ▁did ▁not ▁seek ▁ren om ination ▁as ▁Spe aker ▁in ▁ 1 7 9 6 . ▁On ▁April ▁ 2 9 , ▁ 1 7 9 6 , ▁as ▁chairman ▁of ▁the ▁Committee ▁of ▁the ▁Wh ole , ▁he ▁cast ▁the ▁dec iding ▁vote ▁for ▁the ▁laws ▁necessary ▁to ▁carry ▁out ▁the ▁Jay ▁Tre aty . ▁ ▁In ▁ 1 7