genesis-breadcrumb-author-label.php

<?php
//* Do NOT include the opening php tag

//* Prefix author breadcrumb trail with the text 'Articles written by'
function b3m_prefix_author_breadcrumb( $args ) {
  
  $args['labels']['author'] = 'Articles written by ';
  
  return $args;

}
add_filter( 'genesis_breadcrumb_args', 'b3m_prefix_author_breadcrumb' );