Surnames capitalization

Jacobus van t Hoff was a Dutch scientist (1852-1911). Notice the peculiar arrangement of the apostrophe, and small and capital letters in his surname. 

Lowercase letters are also used for units derived from surnames when they appear in spelled-out form and do not follow a number. The abbreviated form, used as a unit after a number, is capitalized. Celsius and Fahrenheit are always capitalized because they refer to temperature scales (not actual units). 

Although a current trend is to lowercase the surnames of persons when these names are used as modifiers and have become very familiar, many are still capitalized. The following is a list (by no means complete) of names that should be capitalized. 

Korean Usually three names the surname is first and is the formal name. In North Korean names, all three parts start with a capital letter. Examples Kim II Sung is Dr. Kim. In South Korean names, the two parts of the given name are hyphenated, and the second part is lowercase. Example Kim Young-sum is Dr. Kim. 

Do not capitalize surnames that are used as units of measure. 

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