List the territory IDs, description and region description under the in-charge of Mrs. Margaret Peacock.
SELECT T3.TerritoryID, T3.TerritoryDescription, T4.RegionDescription FROM Employees AS T1 INNER JOIN EmployeeTerritories AS T2 ON T1.EmployeeID = T2.EmployeeID INNER JOIN Territories AS T3 ON T2.TerritoryID = T3.TerritoryID INNER JOIN Region AS T4 ON T3.RegionID = T4.RegionID WHERE T1.TitleOfCourtesy = 'Mrs.' AND T1.LastName = 'Peacock' AND T1.FirstName = 'Margaret'