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Origin: British

Meaning: Quick or strong

Swithin is a boy's name of Old English origin. Meaning "quick" or "strong," it's strongly associated with Saint Swithin, a Christian saint whose feast day falls on the 15th of July. According to legend, if rainfall occurs on this date, you can expect it to rain for 40 consecutive days. Whether you believe it or not, nothing will rain on your parade when baby Swithin is around!