Write SQL query to solve given problem: Please give the personal information of the married employee who has the highest pay rate.. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT T2.Demographics FROM Employee AS T1 INNER JOIN Person AS T2 ON T1.BusinessEntityID = T2.BusinessEntityID INNER JOIN EmployeePayHistory AS T3 ON T2.BusinessEntityID = T3.BusinessEntityID WHERE T1.MaritalStatus = 'M' ORDER BY T3.Rate DESC LIMIT 1