Prince Harry and Meghan Markle are continuing their legacy outside of the royal family. A source close to the Duke and Duchess of Sussex tells ET that the couple «has signed with the Harry Walker Agency.»The firm, which represents the Obamas and a slew of other high-profile individuals, will offer the couple a source of income as they branch out on their own.«They have no plans to do any speaking engagements about the royal family,» the source notes, adding that there have been concerns that any further talk of their royal lives could bring «further discomfort» within the royal family.The source says the couple is «firmly committed to social issues the world is facing now, including racial justice, gender equity and mental health.» ET has.