did he suffer from any ailment?
Yes, he was seriously ill and was incapacitated for four months
William Etty
Etty became seriously ill, and was incapacitated for four months. 
by whom was the dawn of love painted? By English artist William Etty what is it about? It shows a nude Venus leaning across to wake the sleeping Love by stroking his wings. when was it completed? In 1828 how was the painting received by the people? It immediately met with a storm of derision from critics for the style in which Venus was painted who was the painter's mentor in early years? Thomas Lawrence did the painter travel to any other country? London can you mention any other painting by him? "The Arrival of Cleopatra in Cilicia" what is it about? It featured numerous nudes and was exhibited to great acclaim. Its success prompted several further depictions of historical scenes with nudes.
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William Etty [SEP] Illness and recovery
In mid-1833 Etty began a portrait of the daughters of Charles Watkin Williams-Wynn, the long-serving Conservative Member of Parliament for Montgomeryshire, titled "Preparing for a Fancy Dress Ball". Etty was then little-known for portraits, but had recently completed "Elizabeth Potts", a portrait of the daughter of a family friend, which although poorly received by some critics was technically highly accomplished. He said at the time that he hoped his portrait of the Williams-Wynn children would be "one of my best". In February 1834, Etty became seriously ill, and was incapacitated for four months. Unable to paint, he exhibited only two already-completed paintings in the 1834 Summer Exhibition, "Elizabeth Potts" and "The Cardinal".