CREATE TABLE table_50101 ("Order" FLOAT, "Name dates" TEXT, "Princess Royal from  ( date )  to  ( date ) " TEXT, "Parent" TEXT, "Date married" TEXT, "Husband dates" TEXT)

Who was the parent on the order of 6?
SELECT "Parent" FROM table_50101 WHERE "Order" = '6'
SELECT "Parent" FROM "table_50101" WHERE "Order" = '6'