How to bequeath estate to a niece/nephew

Steps to ensure your estate benefits a specific family member

We have no children, only a brother, sister, two nephews and a niece. How do we ensure our estate goes to only one of the nephews?

You can achieve this by making a suitable will.

In the absence of children, the couple should make reciprocal wills leaving title to the survivor and the survivor leaving title to the nephew.