There is a family of six persons
Amy, Bob, Cathy, Dareesh, Edward and Firoz.
They are Lorry Driver, Director, Trainer, Sub Inspector, Estate owner and Archaeologist.
There are two married couples in the family.
Dareesh, the Sub Inspector is married to the Lady Trainer.
The Director is married to the Lorry driver.
Firoz, the Archaeologist is the son of Bob and brother of Edward.
Cathy, the Lorry driver is the daughter-in-law of Amy.
E is the unmarried Estate owner.
Amy is the grandmother of Firoz.
How is Edward related of Firoz ?