Forsaithy History, Family Crest & Coats of Arms
The roots of the name Forsaithy are found among the Pictish clans of ancient Scotland. The name comes from the old Gaelic personal name Fearsithe, which means man of peace. 
However, some recorded examples of the surname Forsaithy suggest that it is occasionally a local name derived from residence a place named Forsythe.
There appears to be two origins for the family: Stirlingshire and Edinburghshire.  Another source claims the family came from "Forcett (whence also Fawcett) a township in the wapentake of Gillingwest, in the [North Riding] of Yorkshire,"  but this source's claim is doubtful.
Early Origins of the Forsaithy family
The surname Forsaithy was first found in Stirlingshire, where "Osbert filius Forsyth [who] had charter of a hundred shilling land in the tenement of Salakhill (now Sauchie), sheriffdom of Stirling, from Robert I c. 1308." 
The Edinburghshire's first entry was that of "William de Fersith, bailie of Edinburgh, 1365, [who] may be William of Forsythe, servant of Aleyn of Bollone of Edinburgh, merchant of Scotland, 1394." 
Early History of the Forsaithy family
This web page shows only a small excerpt of our Forsaithy research. Another 278 words (20 lines of text) covering the years 1364, 1364, 1368, 1405, 1420, 1418, 1428, 1446, 1451, 1461, 1471, 1497, 1498, 1504, 1525, 1525, 1512, 1446, 1504, 1621, 1980, 1929, 1402, 1423, 1439, 1424, 1426, 1452, 1487 and are included under the topic Early Forsaithy History in all our PDF Extended History products and printed products wherever possible.
Forsaithy Spelling Variations
Although Medieval Scotland lacked a basic set of spelling rules, which meant that scribes recorded names according to their sounds it was not uncommon for the names of a father and son to be recorded differently. As a result, there are many spelling variations of Scottish single names. Forsaithy has been written Forsyth, Forsythe, Forseyth, Forsy, Foursides and others.
Early Notables of the Forsaithy family (pre 1700)
Notable amongst the Clan at this time was William de Fersith, who participated at an inquest in Edinbergh, 1402. He may be William Fersith (without 'de'), who was burgess of Edinbergh in 1423.
Thomas of Forsythe was listed in Edinburgh, 1439. Robert of Forsythe had a safe conduct in England...
Migration of the Forsaithy family to Ireland
Some of the Forsaithy family moved to Ireland, but this topic is not covered in this excerpt.
Migration of the Forsaithy family
Thousands of Scots left their home country to travel to Ireland or Australia, or to cross the Atlantic for the North American colonies. The difficult crossing was an enormous hurdle, but those who survived found freedom and opportunity in ample measure. Some Scots even fought for their freedom in the American War of Independence. This century, their ancestors have become aware of the illustrious history of the Scots in North America and at home through Clan societies and other organizations. Passenger and immigration lists show many early and influential immigrants bearing the name Forsaithy: James Forsyth who settled in New England in 1685; Catherine Forsyth settled in Georgia in 1747; Adam Forsyth settled in Philadelphia in 1802; followed by Henry, James, John, Joseph, Patrick, Robert, Samuel, Thomas Forsyth, who all passed through the same port between 1800 and 1865..
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: Instaurator ruinae
Motto Translation: A repairer of ruin.