I've got two stories for this one. One is for my username and the other is for my actual name.
I got my username because I ran out of ideas and that since my family holds its Irish blood with high esteem that I'd incorporate that into my handle. So I took the old name for Ireland, Eire (which I thought was spelled Eyre at the time) and added a little something more to make it snappy. And you know what Ireland is? Green! So I put them together and now I have my account name.
How I got my given name is a little more interesting and back-stabby. So when my mother was younger, she and her sisters were shooting the shit and deciding what they would name their kids, as married women do. My mom didn't want to name her kid something generic like Bob or John, so she wanted to name her first son Shane. My aunt liked the name too, so when my aunt had a son first, she was the one who named her son Shane. So my aunt basically stole my name from my mom, while I was named something else. In hindsight, it would've been funny if I were named Shane because then I'd share a full name with a certain villain in a certain popular TV show that I won't give the name of for the sake of hiding my last name. So yeah.