A little month, or ere those shoes were old
With which she followed my poor father's body,
Like
Niobe; all tears, why she, even she--
O God, a beast, that wants discourse of reason,
Would have mourned longer--married with my uncle,
My father's brother...
Hamlet, 1.2.147-151
i.e.
Hamlet's mother marries her brother-in-law a month after her husband was murdered