Clyde from the name of the River Clyde in Scotland, which is of unknown origin. It became a common given name in America in the middle of the 19th century, perhaps in honour of Sir Colin Campbell (1792-1863) who was given the title Baron Clyde in 1858.
From the River Clyde in Scotland — Cumbric Clud, of uncertain origin, though the Romans knew the river as Clota and the Britons as a goddess of the same name.
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