Alexandru Ionescu was a Romanian typographer, early labour leader and socialist journalist. A founding member of Romanian Social Democratic Workers' Party (PSDMR), he was part of its leadership throughout its existence, at the same time working for the unionisation of the Romanian workers. One of the few party leaders with actual working-class background, Ionescu opposed collaboration with the bourgeois political parties, and continued to support the existence of a workers' party even after the other leaders of PDSMR decided on the party's dissolution. A founder, along fellow-minded socialists, of the Working-class Romania circle, Ionescu grew estranged from the main socialist grouping due to disagreements over the newly established labour legislation. Joining the government-sanctioned corporations, he supported at times ideas contradictory to his former socialist positions, but ultimately he rejected corporatism as a form of labour organisation. Despite some attempts at collaboration, he would never reintegrate in the mainstream socialist movement.

Anton Costache Bacalbașa was a Romanian political journalist, humorist and politician, chiefly remembered for his antimilitaristic series Moș Teacă. Together with his brothers Ioan and Constantin, he entered public life as a republican and socialist militant. For a while, his career was intertwined with that of Marxist doyen Constantin Dobrogeanu-Gherea, who inspired in him the idea of a socialist art addressed to the masses. He was himself a popularizer of Marxist ideas, and one of the first Marxist intellectuals in Romanian political history.