The Johnson Brothers: Pioneers of Yoruba History and Medicine

How Samuel Johnson and Obadiah Johnson preserved Yoruba history while advancing early Western medicine in colonial Nigeria.

A Historic Family Legacy

The Johnson family occupies a significant place in the intellectual and cultural history of the Yoruba people. A well-known family photograph from the late nineteenth century shows members of this influential household. Standing at the back is Samuel Johnson, the author of one of the most important historical works on Yoruba civilisation. Seated at the far right is his younger brother Obadiah Johnson (1849–1920), one of the earliest Western-trained Nigerian doctors and the man responsible for ensuring the eventual publication of his brother’s historical masterpiece.
Together, the brothers played crucial roles in preserving Yoruba history and advancing professional medicine during the colonial era.

Origins in Sierra Leone

The Johnson brothers were born in Freetown into a family of liberated Africans, also known as recaptives—Africans who had been freed from slave ships by the British navy and resettled in Sierra Leone during the nineteenth century.
Their parents were of Yoruba people origin and traced their ancestry to the Oyo Empire, one of the most powerful pre-colonial Yoruba states.
Freetown at the time had become an important centre of education and Christian missionary activity in West Africa. It was within this environment that the Johnson brothers received their early education and intellectual formation.

Samuel Johnson: Historian of the Yorubas

Samuel Johnson (1846–1901) was a clergyman of the Church Missionary Society and a passionate historian dedicated to documenting the origins and political evolution of the Yoruba people.
Concerned that Yoruba history was largely preserved only through oral tradition, Johnson began compiling historical records in the 1870s. Over the next two decades, he travelled widely across Yoruba towns, interviewing chiefs, elders, and traditional historians.
His goal was to document:

the origins of Yoruba kingdoms

the rise and fall of major dynasties

political conflicts among Yoruba states

cultural traditions and institutions

After more than twenty years of research, Johnson completed his manuscript in 1897, titled A History of the Yorubas from the Earliest Times to the Beginning of the British Protectorate.

The Lost Manuscript

Despite completing the manuscript, Samuel Johnson never saw his work published.
The only copy of the manuscript was sent to London for printing. However, it was reportedly lost during the publishing process. This devastating loss meant that the years of painstaking historical research appeared to have vanished.
Samuel Johnson died in 1901, believing that his life’s work had been permanently lost.

Obadiah Johnson: Physician and Editor

Samuel’s younger brother, Dr. Obadiah Johnson, played a decisive role in rescuing the manuscript.
Born in 1849, Obadiah Johnson pursued a career in medicine and travelled to Edinburgh to study at the University of Edinburgh, one of the world’s leading medical institutions at the time.
He earned:

M.B., C.M. degree in 1886

M.D. degree in 1889

These achievements made him one of the earliest Nigerians to obtain a Western medical degree.
After completing his studies, he returned to West Africa and served in the colonial medical service. Between 1890 and 1897, he worked as Chief Medical Officer in Lagos, which was then an important administrative centre of British colonial rule.

Reconstructing a Lost History

Determined that his brother’s historical research should not disappear, Obadiah Johnson undertook the extraordinary task of reconstructing the lost manuscript.
Using:

surviving notes

personal recollections

earlier drafts

contributions from Samuel’s research network

he painstakingly rebuilt the text. He also edited and prepared the manuscript for publication.
Unfortunately, Obadiah Johnson did not live to see the book printed. He died in 1920, shortly before its publication.

Publication of a Foundational Historical Work

In 1921, the reconstructed manuscript was finally published in London by George Routledge & Sons.
The book, A History of the Yorubas, quickly became one of the most influential historical texts on Yoruba civilisation and remains widely cited by scholars today.
The work provides detailed accounts of:

the founding myths of the Yoruba people

the political structure of the Oyo Empire

wars among Yoruba states during the nineteenth century

the early encounters with European missionaries and colonial administrators

Because of its depth and documentation, the book remains a cornerstone of African historiography.

Lasting Legacy

The Johnson brothers left a lasting intellectual legacy that extends far beyond their lifetimes.
Samuel Johnson’s dedication to documenting Yoruba history ensured that important traditions and political narratives were preserved for future generations. His work remains essential for historians studying Yoruba society and pre-colonial West Africa.
Meanwhile, Obadiah Johnson’s achievements in medicine and public health positioned him among the early pioneers of Western medical practice in Nigeria. His determination to preserve his brother’s work ensured that one of the most significant historical texts about the Yoruba people survived.
Today, A History of the Yorubas continues to influence historians, anthropologists, and scholars studying African history, ensuring that the Johnson brothers remain central figures in Nigeria’s intellectual heritage.

Sources

A History of the Yorubas from the Earliest Times to the Beginning of the British Protectorate by Samuel Johnson

Academic studies on Yoruba historiography

Records from the University of Edinburgh

Historical archives documenting the Johnson family and early Nigerian intellectual history.