The German word for grandchildren is Enkelkinder (or just Enkel)
Children = Kinder
It literally means children, grand children and great grand children born to a couple, or you could say the family tree.
Durchtriebene Kinder
Das sind meine Kinder.
Die glücklichen Kinder.
lovely children can be translated as:reizende Kinderschöne kinder
Esos ninos hablan german todos los dias
German children call their mother Mama or Mutti.Very young children also say Mami, but that`s not cool anymore when you got older.
Kinder. Like the chocolate brand name which just means children. (singular: Kind)
petit-enfant ou petits-enfants. les grand-parents ont des petits-enfants. (grand-parents have grand-children)
Her ancestry was all German. As mother of nine children, her descendants are very numerous. In World War I, they included the King of England, the German Kaiser and the Russian Tsar. The present Queen and Prince Philip are both descended from her.
"Viel Glück Kinder" would be the right phrase.