From the Roman cognomen Quintilianus, earlier Quinctilianus, which was itself derived from the family name Quinctilius. A notable bearer was the 1st-century rhetorician Marcus Fabius Quintilianus, simply known as Quintilian in English.
People with the name Carilyn have a deep inner desire to use their abilities in leadership, and to have personal independence. They would rather focus on large, important issues, and delegate the details.