Adolf, of Germanic origin, translates to 'Noble wolf'. It was popularized by the 13th-century Austrian Duke, Adolf of Nassau, who became Holy Roman Emperor in 1298. The name has also been associated with several historical figures, including Adolf Hitler, which has led to its decline in usage due to its subsequent negative connotations.
"The name Adolf experienced significant fluctuations in popularity over time, with a peak of 56 births in 1918 and a lowest recorded number of 5 births in various years since the late 19th century."