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Rudolf,1858–89, Austrian archduke, crown prince of Austria and Hungary; only son of Emperor Francis Joseph and Empress Elizabeth. Upon his mysterious death at Mayerling near Vienna (officially declared a double suicide with his mistress, Baroness Maria Vetsera), his cousin Francis FerdinandFrancis Ferdinand,
1863–1914, Austrian archduke, heir apparent (after 1889) of his uncle, Emperor Francis Joseph. In 1900 he married a Czech, Sophie Chotek. She was made duchess of Hohenberg, but because she was of minor nobility their children were barred from succession.
..... Click the link for more information. became heir to the Austro-Hungarian throne.
(Turkana since 1975), a brackish, undrained lake in Kenya, East Africa. Located in a tectonic depression at an elevation of 375 m, Lake Rudolf is 220 km long, is up to 50 km wide and 73 m deep, and has an area of 8,500 sq km. The large Omo River with its permanent flow and a number of seasonally dry rivers (the Turkwel, Kerio, and others) empty into it. The active Teleki Volcano is at its south end. Hippopotamuses are common. Crocodiles and about 40 species of fish inhabit Lake Rudolf. There is fishing on the lake. Lake Rudolf was discovered in 1888 by the Hungarian S. Teleki and the Austrian L. von Höhnel and named after the crown prince of Austria-Hungary.