1.  Rosa is Ben's wife.

2.  Ben is Rosa's husband.

3.  Maria is Rosa and Ben's daughter.

4.  Maria is David and Jenny's mother.

5.  Frank is David and Jenny's father.

6.  David is Jenny's brother.

7.  Jenny is David's sister.

8.  Rosa is David and Jenny's grandmother.

9.  Ben is David and Jenny's grandfather.