Andrea von Habsburg ("Andrea Maria von Habsburg-Lothringen") Archduchess of Austria, Hereditary Countess of Neipperg, (born 30 May 1953, in Würzburg, Bavaria), is the first child and oldest daughter of Otto von Habsburg and his wife Princess Regina of Saxe-Meiningen.
Otto von Habsburg and Princess Regina have one child together.
The system knew they had one child and did not consider future children or terms like "oldest" or "first".