user_identity or first_name aren't showing up.

I’ve been trying to achieve my header saying the username of the person logged in and my site name when the user is logged out in my header.php. When I’m logged out, my site title displays my site name perfectly, but as I soon as I log in, that area is completely blank. I’ve tried user_identy, first_name, last_name. For some reason when I do user_email it displays perfectly my email perfectly but it just won’t display the name. Can you see what my problem is with displaying the name of the logged in user? Much appreciated, thanks.

<?php if ( is_user_logged_in() ) { ?>
<?php $user_info = get_userdata(1);
echo $user_info->first_name . “\n”;
?>
<?php } else { ?>
My Website
<?php } ?>