How Westlake came to be
From Wikipedia’s history of Westlake.
The area known as Westlake was originally settled in 1847 by Charles and Matilda Medlin with about 20 other families. In the mid-twentieth century, what is now Westlake was known as Circle T Ranch, a 2,000 acre ranch founded by Dallas attorney and oilman J. Glenn Turner. When incorporated in the late 1950s, the name Southlake, Texas already existed, so ranchers and homeowners took the name Westlake.
During the late 1990s, the Board of Alderman attempted to disband the town. The large Solana development was annexed by Southlake, while several large tracts of land were annexed by Fort Worth, Texas. A local district judge ruled the annexations in violation of state law, and the properties returned under Westlake jurisdiction.
Text from Wikipedia, licensed CC BY-SA 4.0.