Around the time I had to create my very first email address I was living in Hawaii and about to start college.
Pagers were the big thing back then lol and everyone had a pager code you would type in front of the number so your friends would know it was you that was paging. My pager code was 9808
9 was my lucky number and 808 was the area code for Hawaii, it also (sort of) spelled Bob

So when it was time to come up with my email address I chose Marley9808 (Marley, because I was a huge Marley fan and 9808 because it was my "handle")
Over the years it then began to be used for everything emails, usernames, etc.
I was on another message board for the Marleys and began to be known as "Marley" or "Marley9808" so it has just stayed with me all of these years.....