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The cast of Diego Alonso - 2011 includes: Dennis Pauls Heiko Pinkowski Axel Ranisch
No, they aren't.
Xabi Alonso's brothers are Mikel Alonso and Jon Alonso.
Tito Alonso's birth name is Oscar Alonso.
Alba Alonso's birth name is Alba Alonso Bayona.
Encarna Alonso's birth name is Encarna Alonso Snchez.