Murchison
A Scottish surname usually taken as meaning “Murchie’s son,” ultimately from the Gaelic personal name Murchadh, “sea warrior.”
The #8,106 most common surname in the United States (2010 Census) — about 1 in every 75,506 Americans shares it.
Etymology
Most sources treat Murchison as a patronymic built from Murchie or Murchy, with the Gaelic personal name Murchadh behind it. Murchadh is traditionally explained as coming from elements meaning “sea” and “warrior,” so the deeper sense is often given as “sea warrior.” Some 19th-century writers also connected the surname with Merchiston in Edinburghshire, but the Gaelic patronymic explanation is the stronger and more widely accepted one.
History
The name is Scottish in form and is found in records associated with the Highlands and northeast Scotland. It appears in older scholarship in a few competing explanations, including a place-name link to Merchiston, but later Gaelic scholarship tended to favor derivation from Murchadh and related forms such as Murchie and Murphy. The surname is now well known beyond Scotland through emigration, especially to North America.
Origin
Regions
Variant spellings
Fun fact
The same Gaelic name behind Murchison is also related to Murphy, showing how one old personal name could produce several different surnames in Irish and Scottish forms.
From the historical record
“Ir. Murchadh : v. under Murphy. MURCHISON (A.-Celt.) Murchie's Son: v. MurchieandMurphy [Ir. MacMurchadha] MURCOTTT (Eng.) Bel. to Murcot(t = the MURCUTTJ Moor- Cottage [M.E. mor{e, O.E. m6r + M.E. cot(e, O.E. cot] ]V[urcot(t, Oxon, and Murcot(t, North- ants, were Morcote in the 13th cent.”
— Surnames of the United Kingdom: a concise etymological dictionary (2 vols in 1)