Hvem daterte Friedrich Engels?

Friedrich Engels (1820–1895) var en tysk revolusjonær, politisk økonom, filosof, industrimann og militærhistoriker, som sammen med Karl Marx utviklet teorien som er kjent som marxisme. Engels kom fra en velstående protestantisk familie. Faren var tekstilprodusent, og sto den prøyssiske pietismen nær. I sine tidlige år var han sterkt influert av den radikale tyske poeten Heinrich Heine og av den tyske filosofen G.W.F. Hegel.

Mary Burns (29 September 1821 – 7 January 1863) was a working-class Irish woman, best known as the lifelong partner of Friedrich Engels. Burns was born and lived most of her life in Manchester, England.

Not much is written about Burns. The only direct references to her that have survived are a letter from Karl Marx to Engels on learning of her death, saying she was "very good natured" and "witty", and a letter from Marx's daughter, Eleanor, saying she was "very pretty, witty and an altogether charming girl, but in later years drank to excess". No images of Burns are known to exist.