Conversation so far:
Who did Eleanor of Aquitaine marry?
Eleanor of Aquitaine married Louis VII of France .
When did Eleanor of Aquitaine get married?
On 25 July 1137, Eleanor of Aquitaine and Louis VII of France were married.
Where did Eleanor of Aquitaine get married?
Bordeaux's Cathedral of Saint-André was the location of the marriage between Eleanor of Aquitaine and Louis VII of France.
Are there any other interesting aspects about Eleanor of Aquitaine's first marriage besides marrying King Louis VII, where she married him, and when she married him?
Eleanor of Aquitaine's grandfather, William IX of Aquitaine, gave her this rock crystal vase, which she gave to Louis as a wedding gift.

Question: Why did she give him that gift?
Self-contained rewrite: Why did Eleanor of Aquitaine give her first husband King Louie VII the rock crystal vase given to her by her grandfather?