While he was in the Prince's service he published "Mustapha," with a Prologue by Thomson, not mean, but far inferior to that which he had received from Mallet, for "Agamemnon." The Epilogue, said to be written by a friend, was composed in haste by Mallet, in the place of one promised, which was never given. This tragedy was dedicated to the Prince his master. It was acted at Drury Lane in 1739, and was well received, but was never revived.
In 1740, he produced, as has been already mentioned, the masque of "Alfred," in conjunction with Thomson.
For some time afterwards he lay at rest. After a long interval, his next work was "Amyntor and Theodora" (1747), a long story in blank verse; in which it cannot be denied that there is copiousness and elegance of language, vigour of sentiment, and imagery well adapted to take possession of the fancy. But it is blank verse. This he sold to Vaillant for one hundred and twenty pounds, The first sale was not great, and it is now lost in forgetfulness.
Mallet, by address or accident, perhaps by his dependance on the Prince, found his way
