White horse (mythology) Poseidon was also the creator of horses, creating them out of the breaking waves when challenged to make a beautiful land animal. In Norse mythology, Odin's eight-legged horse Sleipnir, "the best horse among gods and men", is described as grey. Sleipnir is also the ancestor of another grey horse, Grani, who is owned by the hero Sigurd. In Slavic mythology, the war and fertility deity Svantovit owned an oracular white horse; the historian Saxo Grammaticus, in descriptions similar to those of Tacitus centuries before, says the priests divined the future by leading the white stallion between a series of fences
Odin religious practices associated with the god. This multitude of names makes Odin the god with the most names known among the Germanic peoples. The modern English weekday name "Wednesday" derives from Old English "wōdnesdæg". Cognate terms are found in other Germanic languages, such as Middle Low German "wōdensdach" (Dutch "woensdag"), and Old Norse "Óðinsdagr" (Danish, Norwegian and Swedish "Onsdag"). All of these terms derive from Proto-Germanic *"Wodensdag", itself a Germanic interpretation of Latin "Dies Mercurii" ("Day of Mercury"). In Old High German, the name derived from Odin's was replaced by a translation of Church Latin "media hebdomas" ('middle of the