Brinkley is of English origin, meaning 'from the wide meadow'. It is an uncommon given name, but it has been used throughout history as a surname. The name was first recorded in England during the late 13th century.
"Over the span of nearly eight decades, from 1939 to 2013, the name Brinkley was given to a total of 38 newborns, with an average of about five births per year."