Homer ( , "Hómēros") is the name ascribed by the ancient Greeks to the legendary author of the "Iliad" and the "Odyssey", two epic poems which are the central works of ancient Greek literature. The "Iliad" is set during the Trojan War, the ten-year siege of the city of Troy by a coalition of Greek states. It focuses on a quarrel between King Agamemnon and the warrior Achilles lasting a few weeks during the last year of the war. The "Odyssey" focuses on the journey home of Odysseus, king of Ithaca, after the fall of Troy. 

Many accounts of Homer's life circulated in classical antiquity, the most widespread being that he was a blind bard from Ionia, a region of central coastal Anatolia in present-day Turkey. Modern scholars consider them legends. 

The Homeric Question—by whom, when, where and under what circumstances were the "Iliad" and "Odyssey" composed—continues to be debated. Broadly speaking, modern scholarly opinion falls into two groups. One holds that most of the "Iliad" and (according to some) the "Odyssey" are the works of a single poet of genius. The other considers the Homeric poems to be the result of a process of working and re-working by many contributors, and that "Homer" is best seen as a label for an entire tradition. It is generally accepted that the poems were composed at some point around the late 8th or early 7th century BC. The poems are in Homeric Greek, also known as Epic Greek, a literary language which shows a mixture of features of the Ionic and Aeolic dialects from different centuries; the predominant influence is Eastern Ionic. Most researchers believe that the poems were originally transmitted orally.
Around when were they put together?
 late 8th or early 7th century BC