Original sentence: Henry I of Germany (861–936), the Fowler, Duke of Saxony and King of the Germans.though his surname is not "Fowler", Henry I is included here as an example of usage of the term in relation to a name prior to the  broad introduction of surnames in Europe
Edited sentence: Henry the Fowler, or Henry I of Germany (861–936), Duke of Saxony and King of the Germans.Though his surname is not "Fowler", Henry I is included here as an example of usage of the term in relation to a name prior to the  broad introduction of surnames in Europe