Custom Page Title with Sub-Titles

page-title-with-subtitle.php

<?php
// Add our custom page title to singular pages, but not the homepage or blog page
if ( is_page() && ! is_home() && ! is_front_page() ) {
  	remove_action( 'genesis_entry_header', 'genesis_do_post_title' );
 	add_action( 'genesis_after_header', 'blox_open_post_title', 1 );
  	add_action( 'genesis_after_header', 'blox_do_page_title', 2 );
  	add_action( 'genesis_after_header', 'blox_close_post_title', 3 );
}

// Custom title opener
function blox_open_post_title() {
	echo '<div class="page-title"><div class="wrap">';
}

// Custom title closer
function blox_close_post_title() {
	echo '</div></div>';
}

// Custom page title and subtitle (subtitle is a custom field - blox_subtitle)
function blox_do_page_title() {
	$id       = get_the_ID();
	$title    = get_the_title();
	$subtitle = get_post_meta( $id, 'blox_subtitle', true );

	// If not title, return
	if ( 0 === mb_strlen( $title ) ) {
		return;
	}

	echo '<h1 class="entry-title" itemprop="headline">' . $title . '</h1>';

	if ( ! empty( $subtitle ) ) {
		echo '<p class="entry-subtitle">' . $subtitle . '</h1>';
	}
}