The surname Gilespie originated in Scotland during the late Middle Ages. It is a variant spelling of the more common Scottish surname Gillespie, derived from the Gaelic personal name "Gilleasbuig". This name is composed of two elements: "gille" meaning "servant" or "lad", and "easbuig" meaning "bishop".
Gilespie is therefore thought to have been an occupational surname, initially referring to someone who served or worked for a bishop. The earliest recorded instances of the name are found in Scottish records and charters from the 13th and 14th centuries, where it appears spelled variously as Gillespec, Gilaspie, Gilaspie, and Gillespie.
One of the earliest known bearers of the name was Sir John Gillespie, a Scottish knight who fought alongside Robert the Bruce during the Wars of Scottish Independence in the early 14th century. Another notable early Gilespie was Walter Gillespy, a prominent merchant in Aberdeen in the late 15th century.
The Gilespie surname has been associated with several places in Scotland, including the lands of Gilespie in the county of Fife, and the village of Gilespie in East Lothian. Some of the oldest surviving records mentioning the name come from these areas.
During the 16th and 17th centuries, many Gilespies were involved in the religious and political upheavals that swept across Scotland, with some supporting the Protestant Reformation and others remaining loyal to the Catholic Church. One notable figure from this era was John Gilespie, a Presbyterian minister who was executed for his part in the Monmouth Rebellion against King James VII in 1685.
Other historical figures with the Gilespie surname include Thomas Gilespie (1708-1774), a Scottish-American Presbyterian minister and principal founder of the Relief Church; James Gilespie (1736-1805), a Scottish-American merchant and planter in Virginia; and George Gilespie (1683-1737), a Scottish scholar and theologian who wrote extensively in defense of Presbyterianism.
As the centuries passed, bearers of the Gilespie name could be found throughout Scotland and, later, in many parts of the English-speaking world, particularly North America and Australia, following the patterns of Scottish emigration and settlement.