Complex sentence: Marcello Ferrada de Noli had a classical liberal ideological background-influenced by his eldest brother, a lawyer with previous membership in the right-wing Liberal Party -, however he later evolved towards left-liberal and social-libertarian positions.
Split into simpler sentences: Marcello Ferrada de Noli had a classical liberal ideological background, influenced by his eldest brother, a lawyer with previous membership in the right-wing Liberal Party. However, he later evolved towards left-liberal and social-libertarian positions.