theme problem!

My website is at https://www.nkscouting.com

Across the top, it has the word “BRENDANNEWTON,” referring to
a high school basketball player that I just finished doing an
article on.

How do I get this word to disappear? Someone told me that I probably have a custom made theme, which I think I do. I don’t want to wipe out any of the games that are under the word “SCOUTING”!

Any help would be appreciated!
I don’t know what version of Word Press I have. I just guessed.

Thanks!