Show ContentsOnslo History, Family Crest & Coats of Arms

The Onslo name has descended through the generations from the ancient Anglo-Saxon culture. Their name comes from having lived in the settlement of Onslow in the county of Shropshire. The surname Onslo belongs to the large category of Anglo-Saxon habitation names, which are derived from pre-existing names for towns, villages, parishes, or farmsteads.

Early Origins of the Onslo family

The surname Onslo was first found in Shropshire at Onslow, where the family went "as far back as the time of Richard I., and probably much earlier. The first recorded ancestor is John de Ondeslowe, whose grandson, Waring, was father of 'Roger de Ondelsowe, juxta Shresbury,' whose son Thomas was living in the twelve [year] of Edward II, 1318." 1

Early History of the Onslo family

This web page shows only a small excerpt of our Onslo research. Another 170 words (12 lines of text) covering the years 1086, 1571, 1601, 1622, 1628, 1641, 1642, 1654, 1660, 1664, 1685, 1688, 1708, 1710, 1714, 1715, 1717, 1721 and 1801 are included under the topic Early Onslo History in all our PDF Extended History products and printed products wherever possible.

Onslo Spelling Variations

Only recently has spelling become standardized in the English language. As the English language evolved in the Middle Ages, the spelling of names changed also. The name Onslo has undergone many spelling variations, including Onslow, Onsley and others.

Early Notables of the Onslo family

Notables of this surname at this time include:

  • Sir Richard Onslow (1601-1664), an English politician who sat in the House of Commons between 1628 and 1664, he fought on the Parliamentary side during the English Civil War

Migration of the Onslo family

To escape the unstable social climate in England of this time, many families boarded ships for the New World with the hope of finding land, opportunity, and greater religious and political freedom. Although the voyages were expensive, crowded, and difficult, those families that arrived often found greater opportunities and freedoms than they could have experienced at home. Many of those families went on to make significant contributions to the rapidly developing colonies in which they settled. Early North American records indicate many people bearing the name Onslo were among those contributors: Charles Onslow settled in New York State in 1728.



The Onslo Motto +

The motto was originally a war cry or slogan. Mottoes first began to be shown with arms in the 14th and 15th centuries, but were not in general use until the 17th century. Thus the oldest coats of arms generally do not include a motto. Mottoes seldom form part of the grant of arms: Under most heraldic authorities, a motto is an optional component of the coat of arms, and can be added to or changed at will; many families have chosen not to display a motto.

Motto: Festina lente
Motto Translation: Be quick without impetuosity.


  1. Shirley, Evelyn Philip, The Noble and Gentle Men of England; The Arms and Descents. Westminster: John Bower Nichols and Sons, 1866, Print.


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