French  

• don't capitalize de if it follows a title or first name or if it comes before a one-syllable name
• capitalize du and des when used with last names
• don't capitalize: je (I), months, weekdays, names of languages, adjectives made from proper nouns, titles coming before names, and names associated with place and location
• for titles and subtitles, capitalize the first word in titles and subtitles and all proper nouns (capitalizing the first noun and adectives preceding it is also acceptable)
• for titles of series and periodicals, capitalize all major words

German  

• don't capitalize von unless it is used with just the last name
• when alphabetizing umlauts (ä, ö, ü), alphabetize as if the umlauts were followed by an e
• capitalize the first word of each sentence, nouns, Sie (you), Ihr (your), and all words used as nouns
• don't capitalize ich (I), names of languages, weekdays not used as nouns, adjectives, and adverbs
• in titles, capitalize the first word and all other words normally capitalized

Italian  

• names of people living after the Renaissance are alphabetized according to last names
• da, de, del, della, di, and d' are capitalized when used with last names
• capitalize large divisions of time (century, millenium)
• don't capitalize io (I), names of months, weekdays, names of languages, nouns/adjectives/adverbs made from proper nouns, titles of people, words associated with place and location
• in titles, capitalize the first word and all other words normally capitalized

Spanish  

• de is never used with just the last name and shouldn't be capitalized
• del is capitalized and used with the last name alone
• don't capitalize yo (I), names of months, weekdays, names of languages, nouns/adjectives made from proper nouns, titles of people, and words associated with place
• in titles, capitalize the first word and all words normally capitalized

Latin  

• Roman males had praenomen (given name), nomen (clan name), and cognomen (family name)
• Roman females had just the nomen and cognomen
• don't capitalize ego (I)
• in titles, capitalize the first word and all words normally capitalized