His grandfather Jacques Henri de Bourbon , a Spanish national , had declared himself " Head of the House of France " at the death of his father , King Alfonso XIII of Spain .
Head entity: jacques henri de bourbon Q703780 2 3 4 5
Tail entity: alfonso xiii of spain Q18363 30 31 32 33
Relation (head \u2192 tail): P22
Inverse relation (tail \u2192 head): P40