Well, there is a few slight funny stories behind this.
So my junior year of high school I didn't sleep much, I had imsomnia of some sorts and I sucked myself into a few major things in my life.
I can remember spending many days trying to keep my head up in several classes. I successfully fell asleep in class for the first time since kindergarten.
So naturally I did a few loopy things. My most popular one was turning my homework assignments in and spelling my name wrong in the corner.
I got a paper back where I saw "Millary Hillecam", and another one where I just wrote "Hillecam."
That's when I realized I could so easily combine my first and my last name. And it just stuck. And thus it became "Hillecam".