What is "orelli"

The name Orelli can refer to several different people:

• Carlo Orelli (1894–2005) was, until his death, the oldest living Italian veteran of World War I
• Johann Caspar von Orelli (1787–1849), Swiss classical scholar
• Johann Conrad Orelli (1770–1826), cousin to the preceding, and also a classics scholar
• Hans Konrad von Orelli (1846–1912), Swiss theologian