UnScramble this Word: f t r i s?

Questions

Mythology - In Greek mythology, where did Perseus kill his grandfather?

Mythology - In Greek mythology, who did Jocasta marry?

Mythology - In Greek mythology, who did Minos hire to construct the labyrinth?

Mythology - In Greek mythology, who had nine heads?

Mythology - In Greek mythology, who hired Daedalus to construct the labyrinth?