I. C. Frimu

Ion Costache Frimu
Born	October 16 [O.S. October 4] 1871
Died	February 19 [O.S. February 6] 1919
Nationality	Romanian
Occupation	carpenter, politician, and labor activist

Ion Costache Frimu (October 16 [O.S. October 4] 1871 – February 19 [O.S. February 6] 1919) was a Romanian socialist militant and politician, a leading member of the Social Democratic Party of Romania (PSDR) and labor activist. He died after beatings received and contracting an illness in prison, where he was being held for his participation in the typographic workers' demonstration of December 1918.

Frimu, born in Bârzeşti, Vaslui County, was a carpenter by trade. He was active in various trade unions after being appointed cashier of a fraternal society, and worked his way up through the hierarchy. On March 31, 1893, the Romanian Social-Democratic Workers' Party (PSDMR) was founded in Bucharest. Frimu was part of the leadership, as were Ioan Nădejde, Vasile Morţun, Constantin Dobrogeanu-Gherea, Alexandru Ionescu, Christian Rakovsky, Dimitrie Marinescu and Ilie Moscovici.

In December 1896, the Union of Guild Syndicates (USB) was founded, marking a crucial step in the centralization of workers' syndicate organisations. Frimu was elected president of the USB in 1898. In 1899 the PSDMR disbanded when various factions broke away (among them, that led by Morţun). The workers' clubs were also dissolved, with the exception of the Bucharest club, where individuals like Frimu, C. Z. Buzdugan and Rakovsky continued their activity. Around that time, he met the tailor and socialist sympathiser Rozalia (also known as Rozica), a Transylvanian-born orphan who had settled in Bucharest during her late teens, and whom he married in 1901.

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