On this day 114 years ago, on November 25, 1911 (October 5, 1911 in the lunar calendar), Marx's daughter and son-in-law, Lafagh, committed suicide. On November 25, 1911, Marx's daughter and son-in-law, Lafagh, committed suicide. Paul Lafagh, born in Cuba in 1842. Returned to France in 1851. Studied medicine in Paris, concerned with political and social issues, but influenced by Proudhonism. In 1865, he went to London to study medicine and joined the First International. He was a member of the General Committee. He met Marx and Engels. In 1868, he married Marx's daughter Laura. In 1870, he returned to France and published a newspaper in Bordeaux. During the Commune, he went to Paris in April 1871. In August, he fled to Spain. Actively participated in the struggle against Bakuninism within the First International. He later became one of the leaders of the French workers' movement, founded the French Workers' Party, and promoted Marxist ideas. He was imprisoned in 1883. He was a member of parliament from 1885 to 1894, but opposed socialist participation in bourgeois government. The couple committed suicide on November 25, 1911, and Lenin attended their funeral at the Abbé Lachaise cemetery.