This is the 9110th most frequent Russian word.
самойлов
"Самойлов" is a Russian surname and does not have a standalone meaning in English.
In this sentence, 'Самойлов' is used as a proper noun, likely a surname, referring to an individual.
Самойлов приехал в город вчера.
Samoylov arrived in the city yesterday.
Here, 'Самойлов' again functions as a proper noun, referring to an author or a creator.
Я прочитал книгу, которую написал Самойлов.
I read a book written by Samoylov.
In this instance, 'Самойлов' denotes the name of a music band, applying the proper noun to an entity as a title.