The name Grierson originates from the Scottish lowlands

Scottish Lowlands

The Scottish Lowlands is a name given to the Southern half of Scotland.The area is called a' Ghalldachd in Scottish Gaelic, and the Lawlands ....

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The surname Grierson

Grierson

Grierson may refer to:* Clan Grierson* Grierson * Grierson's Raid* Grierson Spring, TX* Grierson was one of the GWR 3031 Class locomotives that were built for and run on the Great Western Railway between 1891 and 1915; formerly named Ulysses before 1895....

is a modern spelling of the medieval (circa 1408) surname Grerson. Ancestry.com states that it is a patronymic

Patronymic

A patronym, or patronymic, is a component of a personal name based on the name of one's father, grandfather or an even earlier male ancestor. A component of a name based on the name of one's mother or a female ancestor is a matronymic. Each is a means of conveying lineage.In many areas patronyms...

 form of the medieval Scottish personal name

Personal name

A personal name is the proper name identifying an individual person, and today usually comprises a given name bestowed at birth or at a young age plus a surname. It is nearly universal for a human to have a name; except in rare cases, for example feral children growing up in isolation, or infants...

 Grier

Grier

-People surnamed Grier:* Bobby Grier , American football player* David Grier, musician* David Alan Grier , American actor* Francis Grier, British composer* Mike Grier , American hockey player...

which is a form of the personal name Gregory, but provides no source for this. The chiefly line, the Griersons of Lag, claim to be descended from Gilbert, second son of Malcolm, dominus of MacGregor who died in about 1374. However, Furguson claims there is no proof that the Griersons are descended from the MacGregors. The principal seat of the Griersons was Lag, which was obtained in about 1408. George Dunbar, Earl of March resigned the lands of Dalgarnock in Dumfriesshire

Dumfriesshire

Dumfriesshire or the County of Dumfries is a registration county of Scotland. The lieutenancy area of Dumfries has similar boundaries.Until 1975 it was a county. Its county town was Dumfries...

 to Gilbert Grierson of Lag sometime before 1418.

The current Chief of the name

Scottish clan chief

The Scottish Gaelic word clann means children. In early times, and possibly even today, clan members believed themselves to descend from a common ancestor, the founder of the Scottish clan. From its perceived founder a clan takes its name. The clan chief is the representative of this founder, and...

 Grierson, and a member of the Standing Council of Scottish Chiefs

Standing Council of Scottish Chiefs

The Standing Council of Scottish Chiefs is the organisation of the Chiefs of many prominent Scottish Clans. The SCSC is the definitive and authoritative body for information on the Scottish Clan System.-History:...

. is Sarah Grierson of Lag, the first female to hold this role in an unbroken line from the family of Grierson of Lag.

The crest badge of a clan member of the Griersons contains the Latin

Latin

Latin is an Italic language originally spoken in Latium and Ancient Rome. It, along with most European languages, is a descendant of the ancient Proto-Indo-European language. Although it is considered a dead language, a number of scholars and members of the Christian clergy speak it fluently, and...

 motto

Motto

A motto is a phrase meant to formally summarize the general motivation or intention of a social group or organization. A motto may be in any language, but Latin is the most used. The local language is usual in the mottoes of governments...

: HOC SECURIOR which may be translated as "Safer by This".