The name Alexander

We love this name. It's basically the only one we can agree on as of yet. It also hold special meaning for me due to a book that was read to me over and over as a child by someone who is no longer alive. We're just worried that it's too common? I know no name will ever be as common as Jessica or Brittney was. But we're just skeptical of him being Alex number X, Y, Z in his class.