Show ContentsCosman History, Family Crest & Coats of Arms

The Anglo-Saxon name Cosman comes from when its first bearer worked as a person who worked in a castle. The original bearer of the surname may have held the post of governor or constable of the castle. The surname Cosman is derived from the Old Norman French word castel, which means castle. The suffix man denotes a servant.

Early Origins of the Cosman family

The surname Cosman was first found in Dorset where they held a family seat from very ancient times, some say well before the Norman Conquest and the arrival of Duke William at Hastings in 1066 A.D.

Early History of the Cosman family

This web page shows only a small excerpt of our Cosman research. Another 69 words (5 lines of text) are included under the topic Early Cosman History in all our PDF Extended History products and printed products wherever possible.

Cosman Spelling Variations

Until quite recently, the English language has lacked a definite system of spelling rules. Consequently, Anglo-Saxon surnames are characterized by a multitude of spelling variations. Changes in Anglo-Saxon names were influenced by the evolution of the English language, as it incorporated elements of French, Latin, and other languages. Although Medieval scribes and church officials recorded names as they sounded, so it is common to find one person referred to by several different spellings of his surname, even the most literate people varied the spelling of their own names. Variations of the name Cosman include Castleman, Casselman, Cassman, Cassellman and others.

Early Notables of the Cosman family

More information is included under the topic Early Cosman Notables in all our PDF Extended History products and printed products wherever possible.


Australia Cosman migration to Australia +

Emigration to Australia followed the First Fleets of convicts, tradespeople and early settlers. Early immigrants include:

Cosman Settlers in Australia in the 19th Century
  • Mr. Francis Cosman, English convict who was convicted in Kingston Upon Hull, Yorkshire, England for 10 years, transported aboard the "Equestrian" on 27th August 1852, arriving in Tasmania (Van Diemen's Island) 1

Halifax Explosion
  • Mr. Frederick Henry  Cosman (1877-1917), Canadian resident from Halifax, Nova Scotia, Canada who died in the Halifax Explosion (1917) 2


  1. Convict Records Voyages to Australia (Retrieved 16th May 2022). https://convictrecords.com.au/ships/equestrian
  2. Halifax Explosion Book of Remembrance | Maritime Museum of the Atlantic. (Retrieved 2014, June 23) . Retrieved from https://maritimemuseum.novascotia.ca/what-see-do/halifax-explosion/halifax-explosion-book-remembrance


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