Aldy History, Family Crest & Coats of Arms
The name Aldy was first used by the ancient Strathclyde-Briton people of the Scottish/English Borderlands. The first Aldy to use this name no doubt lived near the mountain called, Holy Day, in the county of Annandale. However, some sources claim the "name is derived from the slogan or war cry of the family 'a holy day, a holy day.' "  
Early Origins of the Aldy family
The surname Aldy was first found in Annandale. "The Hallidays of Hoddom, Dumfriesshire, were an old family there, and probably gave their name to Halliday Hill in the parish of Dalton." 
One of the first records of the family was found in 1303, when Adam de Halide was a juror on inquest at St. Andrews. A few years later, John Halyday was an archer of the East March in 1404 and Ambrose Halyday and David Halyday were merchants in Edinburgh in 1479. 
Despite the general understanding that the family was Scottish in origin, early records in England, specifically the Hundredorum Rolls of 1273, list Richard Haliday in Buckinghamshire and Gerard Haliday in Suffolk. Later, the Yorkshire Poll Tax Rolls of 1379 listed: Willelmus Haliday, Johannes Halyday, and Adam Halyday.  The reader should be reminded that Yorkshire's proximity to the Scottish border probably points to the aforementioned Scottish origin as the borders were extremely mercurial.
One romantic source notes: "A well-known Scottish Border Clan, who from their great animosity against the Southron are said to have adopted the war-cry or slogan of A Holy Day, (Scottice, 'a Haly Day'), because the chiefs and people of Annandale, whenever they made a raid or foray upon the Saxon border, accounted the day spent in rapine and slaughter a holy one." 
Early History of the Aldy family
This web page shows only a small excerpt of our Aldy research. Another 131 words (9 lines of text) covering the years 1120, 1605, 1415, 1593, 1661, 1626, 1550, 1612, 1605, 1606, 1697, 1697, 1516, 1576, 1576, 1570, 1685, 1739, 1637, 1724, 1664, 1688, 1692, 1685, 1728, 1802, 1728, 1788, 1812, 1788, 1789, 1866, 1789, 1812, 1832, 1833 and 1866 are included under the topic Early Aldy History in all our PDF Extended History products and printed products wherever possible.
Aldy Spelling Variations
Scribes in Medieval Scotland spelled names by sound rather than any set of rules, so an enormous number of spelling variations exist in names of that era. Aldy has been spelled Halliday, Haliday, Holyday, Holiday, Holliday, Halidays and many more.
Early Notables of the Aldy family (pre 1700)
Notable amongst the family at this time was Walter Halliday (also spelled Haliday, Halyday, and Holliday), Scottish royal minstrel at the battle of Agincourt in 1415, thought to be son of the chieftain of Annandale in Dumfries, founding member of a minstrels' guild, now known as the Worshipful Company of Musicians; Barten Holyday or Holiday (1593-1661), a clergyman, author and poet, appointed Archdeacon of Oxford by King Charles I in 1626; Sir Leonard Holliday (Hollyday or Halliday) (c. 1550-1612) founder of the East India Company, and a Lord Mayor...
Migration of the Aldy family to Ireland
Some of the Aldy family moved to Ireland, but this topic is not covered in this excerpt.
Migration of the Aldy family
The number of Strathclyde Clan families sailing for North America increased steadily as the persecution continued. In the colonies, they could find not only freedom from the iron hand of the English government, but land to settle on. The American War of Independence allowed many of these settlers to prove their independence, while some chose to go to Canada as United Empire Loyalists. Scots played essential roles in the forging of both great nations. Among them: Joseph Halliday settled in Barbados in 1686; John Halliday settled in Maryland in 1775; James Halliday settled in Petersburg, Virginia in 1822, along with his father David..
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: Quarta saluti
Motto Translation: The fourth to health.