Thomas Warton, the younger, born on January 9th in 1728, was an English literary historian, critic, and Poet Laureate of England from 1785 to 1790. He revived the sonnet http://en.wikipedia.org/wiki/Sonnet which had fallen out of fashion. His preference for poetic forms also included light and humorous verse and odes.
The rhyme scheme in a Shakespearean sonnet is a-b-a-b, c-d-c-d, e-f-e-f, g-g with the last two lines being a rhyming couplet.
About 170 years separate the Bard of Avon from Warton, the Poet Laureate, who seems to have taken some liberty with the Shakespearean sonnet.
The following sonnet by Warton contains 14 lines and ten syllables per line (iambic pentameter) with the rhyme scheme of a-b-b-a, a-b-c-c, e-f-e-f, e-f:
To the River Loddon
Ah! what a weary race my feet have run
Since first I trod thy banks with alders crowned,
And thought my way was all thro' fairy ground,
Beneath thy azure sky and golden sun;
Where first my muse to lisp her notes begun!
While pensive Memory traces back the round,
Which fills the varied interval between;
Much pleasure, more of sorrow, marks the scene.
Sweet native stream! those skies and suns so pure
No more return, to cheer my evening road!
Yet still one joy remains, that, not obscure,
Nor useless, all my vacant days have flowed,
From youth's gay dawn to manhood's prime mature;
Nor with the muse's laurel unbestowed.
Ode to Sleep
On this my pensive pillow, gentle Sleep!
Descend, in all thy downy plumage drest:
Wipe with thy wing these eyes that wake to weep,
And place thy crown of poppies on my breast.
O steep my senses in oblivion's balm,
And sooth my throbbing pulse with lenient hand;
This tempest of my boiling blood becalm!
Despair grows mild at thy supreme command.
Yet ah! in vain, familiar with the gloom,
And sadly toiling through the tedious night,
I seek sweet slumber, while that virgin bloom,
For ever hovering, haunts my wretched sight.
Nor would the dawning day my sorrows charm:
Black midnight and the blaze of noon alike
To me appear, while with uplifted arm
Death stands prepar'd, but still delays, to strike.