The surname Trendle is believed to have originated in England, particularly in the counties of Devon and Somerset. It is thought to have derived from the Old English words "trendel" or "trendyl," which referred to a circular object or a spherical shape.

One of the earliest recorded mentions of the surname Trendle can be found in the Domesday Book of 1086, where it appears as "Trendel." This suggests that the name was already in use during the late 11th century.

In the 13th century, the surname Trendle was found in various records from the southwest of England, including the Assize Rolls of Somerset and the Pipe Rolls of Devon. During this period, the name was often spelled as "Trendel," "Trendill," or "Tryndel."

The surname Trendle is also associated with several place names in the region, such as Trendle Farm in Somerset and Trendle Cross in Devon. These place names likely originated from individuals bearing the surname Trendle who lived or owned land in those areas.

One notable person with the surname Trendle was John Trendle, a merchant and politician who lived in the 16th century. He served as the Mayor of Exeter in 1555 and played a significant role in the city's affairs during the turbulent period of the English Reformation.

Another individual with the Trendle surname was William Trendle, who was born in Devon in the late 16th century and later became a successful businessman in London. His descendants continued to use the surname and some of them migrated to other parts of England and Wales.

In the 17th century, the Trendle family had established itself in various parts of England, and the surname appeared in records from counties such as Somerset, Devon, Dorset, and Wiltshire. One notable member of the family during this time was Richard Trendle, a landowner and prominent figure in the town of Sherborne, Dorset.

During the 18th and 19th centuries, individuals with the surname Trendle continued to be found in various parts of England, particularly in the southwestern regions. Some notable examples include James Trendle, a farmer and landowner in Somerset in the late 18th century, and William Trendle, a businessman and philanthropist who lived in Devon in the mid-19th century.

Throughout its history, the surname Trendle has been associated with various occupations and social classes, ranging from farmers and merchants to landowners and politicians. While it may not be as widespread as some other English surnames, it has maintained a strong presence in the southwestern counties of England for several centuries.