DeLamar, De Lamar de la Mar or Delamar is a topographic byname/surname literally meaning "of/from/by the sea". Notable people with the name include: Alice DeLamar Fien de la Mar (1898–1964), Dutch actress and singer Henry DeLamar Clayton (general) Henry De Lamar Clayton Jr. José de la Mar (1776–1830), Peruvian military leader
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