Jason
A name of Greek origin meaning “healer,” though as a surname it may also sometimes reflect a shortened form of Jameson.
The #8,198 most common surname in the United States (2010 Census) — about 1 in every 76,271 Americans shares it.
Etymology
The best-known root of Jason is the Greek name Iasōn, traditionally explained from a Greek word meaning “to heal,” so the name is often glossed as “healer.” The surname, however, is not necessarily the same as the classical personal name in every family line. One 19th-century surname dictionary suggests that at least some English bearers may simply have been Jamesons with the middle letters dropped.
History
The classical name Jason was familiar in learned and biblical writing, which helped keep it recognizable in English. As a surname, it appears to have been uncommon, and historical scholarship is cautious about treating every family named Jason as directly descended from the Greek hero. Lower specifically argued that the baronet family of this name was more likely a shortened form of Jameson than a literal reference to Argonaut Jason.
Origin
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Fun fact
The name Jason was also used in Jewish and early Christian contexts as a Greek form related to Joshua/Jesus in some historical writings.
From the historical record
“JASON. Albeit the baronet family of this name (extinct in 1788) bore in their arms " a golden fleece," I clo not think they ever proved their pedigree from the leader of the Argonautaa. It is far more probable that they were only Jamesons with the omission of a couple of letters. JAY. JAYE. A township united witli…”
— Patronymica Britannica: a dictionary of the family names of the United Kingdom