Nostradamus    IV  Century,  60th Quatrain 

1555 Lyon Bonhomme 1557 Utrech Du Rosne
The edition 1555, Bonhomme has three centuries and 52
quatrains so you cannot find the quatrain in this century. 

1557 Lyon Du Rosne 1568 Lyon Benoist Rigaud

1597 Lyon La premiere face du Ianus
  The seven children left in hostage,
The third will come to slaughter his child:
Because of his son two will be pierced by the point,
Genoa, Florence, he will come to confuse them.