It would be a pity to tell you the sequel in my own words; let me quote again from the text, translated by Walter Pater.

I think you will find it beautiful and touching: "Then Amile began to weep in secret, and thought within himself, 'If this man was ready to die before the King for me, shall I not for him slay my children?
Shall I not keep faith with him who was faithful to me even unto death ?' And Amile tarried no longer, but departed to the chamber of his wife, and bade her go to hear the Sacred Office.

And he took a sword, and went to the bed where the children were lying, and found them asleep.

And he lay down over them and began to weep bitterly and said, 'Has any man yet heard of a father who of his own will slew his children?
Alas, my children! I am no longer your father, but your cruel murderer.' "And the children awoke at the tears of their father, which fell upon them; and they looked up into his face and began to laugh.

And as they were of age about three years, he said, 'Your laughing will be turned into tears, for your innocent blood must now be shed'; and therewith he cut off their heads.