From Britannica 11th Edition (1911) Morpheus, in Roman mythology, one of the sons of Somnus, the god of sleep. He was a personification, apparently invented by Ovid (Metam. xi. 635), of the power that calls up human shapes (uopOai) of all kinds to the dreamer. His brothers Phobetor and Phantasus assumed the forms of all kinds of animals and inanimate things.
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