Get page id by title?

Get page id by title?

I'm using the following code to insert the content from another wp page into my main home page.
Is it possible to make it work with a page title instead of an id number?
Eg. Not $page_id = 518 but $page_id = 'about' instead????
$page_id = 518; //Your Page ID
$page_data = get_page( $page_id );
// Displays the title
echo '<h1>'. $page_data->post_title .'</h1>';
// Displays the content
echo apply_filters('the_content', $page_data->post_content);
?>