Maria I 's husband , Pedro III , was titled " de jure uxoris " King automatically after his wife 's accession , since the couple already had an heir José , Prince of Beira .
Head entity: pedro iii Q964094 5 6
Tail entity: josé, prince of beira Q670383 30 31 32 33 34
Relation (head \u2192 tail): P40
Inverse relation (tail \u2192 head): P22