Ernst Leonard Lindelöf (Swedish pronunciation: [ˈlɪ̂nːdɛˌløːv]; 7 March 1870 – 4 June 1946) was a Finnish mathematician, who made contributions in real analysis, complex analysis and topology. Lindelöf spaces are named after him. He was the son of mathematician Lorenz Leonard Lindelöf and brother of the philologist Uno Lorenz Lindelöf. He was secretary of the Finnish Society of Science and Letters (societas scientiarum Fennica) in its centenary year, 1938. . Biography.
https://en.wikipedia.org/wiki/Ernst_Leonard_Lindel%C3%B6f