Prince Ludwig August ( second son of August and Clémentine ) and his wife , Princess Leopoldina of Brazil , are buried alongside their sons - Peter , August Leopold and Joseph Ferdinand .
Head entity: joseph ferdinand Q10309382 31 32
Tail entity: princess leopoldina of brazil Q254654 15 16 17 18
Relation (head \u2192 tail): P25
Inverse relation (tail \u2192 head): P40