* 孔 (Kǒng) is his family name.
* 子 (zǐ) is a title of respect, similar to "Master" or "Mr."
It's important to note that the name "Confucius" is a Latinized version of his name. It's derived from the Latin "Confucius", which is based on the Chinese "Kong Fuzi".
You might also see his name spelled as 孔夫子 (Kǒng Fūzǐ), which adds the word "夫 (fū)" before "子 (zǐ)" for extra respect.