This is the 1199th most frequent Japanese word.
藤田
"藤田" (Fujita) is a Japanese surname meaning "wisteria field."
Here, 藤田 (Fujita) is used as a surname followed by さん, which is a polite suffix commonly used to address others.
藤田さんはとても親切な人です。
Mr./Ms. Fujita is a very kind person.
In this sentence, 藤田 (Fujita) refers to an individual's surname, followed by という to signify 'named.'
私の高校には藤田という先生がいます。
In my high school, there is a teacher named Fujita.
This usage of 藤田 (Fujita) directly refers to the surname as a general category.