1. The brother-in-law of the bride, a foolish young man, whose grandfather had died
And he had also died, after his father had died before him

2. And the reason being, the grandfather had married his son
To a woman who then gave birth to a boy, nothing surprising in that

3. So her brother inherits what remains, because he
Is a male heir to our two deceased, and he takes precedence

4. So this is my helpful answer to the questioner
Even if the wording does not fully meet what is required