The poem , written when she could not have been older than fifteen , is addressed to Christina of Lorraine on the birth of her son , Cosimo II de ' Medici .
Head entity: cosimo ii de' medici Q312297 27 28 29 30 31
Tail entity: christina of lorraine Q257579 17 18 19
Relation (head \u2192 tail): P25
Inverse relation (tail \u2192 head): P40