ri ▁Ferr ar ini ▁(" Gu izz ardo , ▁son ▁of ▁the ▁a for ement ioned ▁master ▁Ferr ar ino "). ▁It ▁is ▁generally ▁accepted ▁that ▁this ▁is ▁the ▁same ▁Ma istre ▁Fer ari ▁de ▁Fe ir ara ▁of ▁the ▁flor ile g ium ▁and ▁this ▁push es ▁his ▁dates ▁back ▁at ▁least ▁to ▁ 1 3 1 0 , ▁making ▁the ▁ 1 3 3 0 ▁reference ▁probable . ▁The ▁father ▁and ▁son ▁who ▁took ▁the ▁o ath ▁to ▁the ▁po pe ▁were ▁said ▁to ▁be ▁contr ata ▁se xt i ▁San ct i ▁Roman i : ▁propriet ors ▁of ▁a ▁sixth ▁of ▁San ▁Rom ano . ▁ ▁Ferr ar ino ▁is ▁probably ▁also ▁the ▁Ferr ar ino ▁dei ▁Tro g ni , ▁son ▁of ▁Bart ol ome o , ▁found ▁in ▁Pad ua ▁in ▁ 1 3 1 7 , ▁ 1 3 2 5 , ▁and ▁ 1 3 3 0 . ▁This ▁Ferr ar ino ▁had ▁a ▁son , ▁Gu izz ardo , ▁who ▁appears ▁in ▁an ▁Este ▁document ▁of ▁ 1 3 1 3 : ▁E go ▁G ui ç ard us ▁fil ius ▁mag ist ri ▁Fer ar ini ▁de ▁Tr ong nis ▁de ▁Ferr aria ▁doctor is ▁gram at ice ▁sac ri ▁pal at ij ▁not arius ▁(" I , ▁Gu izz ardo , ▁son ▁of ▁the ▁master ▁Fer ari ▁de ▁Tro g ni ▁de ▁Ferr aria , ▁doctor ▁of ▁grammar ▁and ▁not ary ▁of ▁the ▁sacred ▁palace ▁[ i . e . ▁Holy ▁See ]