1.

Charles' father is Anne's father-in-law.

2.

Anne's brother is Charles' brother-in-law.

3.

Charles' sister is Sophia's aunt.

4.

Anne's mother is Jason's grandmother.

5.

Anne's father is Sophia's grandfather.

6.

Charles' brother is Jason's uncle.

7.

Anne's mother is Charles' mother-in-law.

8.

Your uncle is your father's brother.

9.

My nephew is my brother's son.

10.

My cousin is my aunt's son (o daughter).