Waldo 1 is the use of the surname Waldo as a given name, derived from the Anglo-Scandinavian personal name Waltheof. Its present adoption in the English-speaking world is primarily in honor of the American transcendentalist, poet, and author Ralph Waldo Emerson (1803–1882), whose middle name came from a Waldo family surname on his father's side.
The ultimate origin, Waltheof, is composed of Old Norse elements meaning "foreign" and "one who holds land." The name was introduced to England during the Viking Age and appears in historical records, notably borne by Waltheof, Earl of Northumbria (c. 1050–1076), a powerful Anglo-Saxon nobleman who led a rebellion against William the Conqueror.
As a given name, Waldo experienced modest popularity in the 19th and early 20th centuries, particularly in the United States, reflecting admiration for Emerson's philosophical works and essays. It has since declined in common use, often perceived as old-fashioned or quirky.
- Meaning: From the surname Waldo, ultimately derived from the Old Norse name Waltheof ('foreign land-holder')
- Origin: Anglo-Scandinavian, English surname-turned-given
- Usage regions: English-speaking world, notably United States