The surname Gilly originates from the Norman French language and is believed to have been introduced to England following the Norman Conquest of 1066. It is derived from the medieval French personal name "Giles" or "Gille", which itself is derived from the Greek name "Aigidios" meaning "kid" or "young goat".
The earliest recorded instances of the surname Gilly can be found in the Domesday Book of 1086, where it is listed as "Gilli" and "Gillie". These entries suggest that the name was already present in England by the late 11th century and may have been brought over by Norman settlers.
During the medieval period, the surname Gilly was particularly prevalent in the county of Warwickshire, where it is believed to have originated from the village of Gilley, which itself may have been named after an early bearer of the name.
One notable historical figure with the surname Gilly was Sir John Gilly, a 16th century English military commander who served under King Henry VIII. He was born in 1504 and played a significant role in the English campaigns against Scotland and France during the 1540s.
Another individual of note was William Gilly, an English Baptist minister and author who lived from 1789 to 1855. He is best known for his works on religious history and his travels in the Holy Land.
In the 18th century, a family of Gillys made significant contributions to the field of architecture. Notable members include William Edmund Gilly (1736-1827), a renowned English architect and surveyor, and his son David Gilly (1788-1867), who designed several notable buildings in Berlin, Germany.
The surname Gilly has also been associated with the city of Marseille in France, where a prominent family of that name played a significant role in the city's maritime trade and commerce during the 17th and 18th centuries. One notable member was Pierre Gilly (1619-1698), a wealthy merchant and shipowner.
Finally, the surname Gilly has been carried by individuals from various other countries, including Scotland, where it is believed to have been introduced through Norman influence. One example is the Scottish novelist and playwright William Gilly (1922-2009), who was known for his works exploring working-class life in Glasgow.