Marcus Aurelius Antoninus was born in AD 121, in the reign of the emperor Hadrian. At first he was called Marcus Annius Verus, but his well-born father died young and he was adopted, first by his grandfather, who had him educated by a number of excellent tutors, and then, when he was sixteen, by Aurelius Antoninus, his uncle by marriage, who had been adopted as Hadrian's heir, and had no surviving sons of his own. Aurelius Antoninus changed Marcus' name to his own and betrothed him to his daughter, Faustina. She bore fourteen children, but none of the sons survived Marcus except the worthless Commodus, who eventually succeeded Marcus as emperor.

On the death of Antoninus in 161, Marcus made Lucius Verus, another adopted son of his uncle, his colleague in government. There were thus two emperors ruling jointly for the first time in Roman history. The Empire then entered a period troubled by natural disasters, famine, plague and floods, and by invasions of barbarians. In 168, one year before the death of Verus left him in sole command, Marcus went to join his legions on the Danube.

Apart from a brief visit to Asia to crush the revolt of Avidius Cassius, whose followers he treated with clemency, Marcus stayed in the Danube region and consoled his somewhat melancholy life there by writing a series of reflections which he called simply To Himself. These are now known as his Meditations, and they reveal a mind of great humanity and natural humility, formed in the Stoic tradition, which has long been admired in the Christian world. He died, of an infectious disease, perhaps, in camp on 17 March AD 180.

O. Henry (1862-1910) had a short but colourful life. Born William Porter in Greensboro, North Carolina, he initially worked as a pharmacist before moving into journalism. In 1896 he was arrested for embezzling funds while working as a bookkeeper for a bank.

In a moment of madness, he absconded on his way to the courthouse before his trial and fled to Honduras for six months. He returned to face trial after learning that his wife was dying of tuberculosis and served three years in jail. While in prison, he adopted the pen name O. Henry, and after his release he found great fame and popularity as a short story writer.

Frederick Douglass was born into slavery in Maryland, 1818. He was separated from his mother as a baby and lived with his grandmother up to the age of eight, when he was sent to live as a house servant, a field hand and then a ship caulker. He escaped to New York in 1838 and seven years later published Narrative of the Life of Frederick Douglass, an autobiography of his life as a slave, which became an instant bestseller.

Douglass rose to fame as a powerful orator and spent the rest of his life campaigning for equality. He became a national leader of the abolitionist movement, a consultant to Abraham Lincoln in the civil rights movement and a passionate supporter of the women’s rights movement. He died in 1895.

Katherine Mansfield, short-story writer and poet, was born Kathleen Mansfield Beauchamp in 1888 in Wellington. At 19, she left for the UK and became a significant Modernist writer, mixing with fellow writers such as Virginia Woolf, TS Eliot and DH Lawrence.

She wrote five collections of short stories, the final one being published posthumously by her husband, the writer and critic John Middleton Murry, along with a volume of her poems and another of her critical writings, and subsequently there have been collections of her letters and journals.

She died of tuberculosis at the age of 34 at Fontainebleau. Although New Zealand settings do feature in her works, she looked to European movements in writing and the arts for inspiration, and also wrote stories with a European setting.