How were Louis XIV of France and Charles II of Spain related?

Charles II of Spain was the first cousin of Louis XIV of France.

Their nearest shared ancestors were Philip III of Spain and Margaret of Austria, Queen of Spain.

That is only the shortest of 2 separate lines of descent between them.

The line between them

1. Louis XIV of France 1638–1715
2. Anne of Austria 1601–1666
3. Philip III of Spain 1578–1621
4. Philip IV of Spain 1605–1665
5. Charles II of Spain 1661–1700

See the line on the tree