Family tree Vredeling » Sources » https://books.google.nl/books?id=0ztlzQ9ULl8C&pg=PA34&lpg=PA34&dq=%22dirk+van+den+wale%22&source=bl&ots=o18xzb1EHm&sig=JBlsSwKQq8wmiHuUEci8z_l-ihs&hl=nl&sa=X&ved=0ahUKEwjI_7HGl4HLAhWE2hoKHdMQB0YQ6AEIQjAH#v=onepage&q=%22dirk%20van%20den%20wale%22&f=false
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