She corresponded with Garrick, Dr Blair and Principal Robertson; and when in Edinburgh, where she was very well received, she arranged to entrust the education of her son to Principal Robertson.
In this respect it reached its height in the second half of the 18th century, and is specially associated with Colley Cibber, Samuel Johnson, Cumberland the dramatist, David Garrick, Samuel Richardson, Sir Joshua Reynolds, Beau Nash, Miss Chudleigh and Mrs Thrale.
He took it to London and submitted it to Garrick for representation at Drury Lane, but it was rejected as unsuitable for the stage.
Garrick produced Agis at Drury Lane on the 21st of February 1758.
In 1760 his tragedy, The Siege of Aquileia, was put on the stage, Garrick taking the part of Aemilius.