The word Christopher is of Greek origin and the meaning it conveys is that of somebody who is bearing Christ inside.
The name has been widely used because of a Saint with the same name who used to carry people across a river. One day he carried a child who he later found that he was Christ. Since that time the legend has its place in the annals of history.
There are many popular figures with the same name that we find have redefined the history of the civilisation; Christopher Columbus was one such figure.
You can find several variants also of the name that are used in various societies. Chris, Christie and Topher all these names can trace their origin in that very word.