Edward Jenner Jenner was born on 17 May 1749 (6 May Old Style) in Berkeley, Gloucestershire, as the eighth of nine children. His father, the Reverend Stephen Jenner, was the vicar of Berkeley, so Jenner received a strong basic education. He went to school in Wotton-under-Edge and Cirencester. During this time, he was inoculated for smallpox, which had a lifelong effect upon his general health. (Crucially this meant that he underwent variolation and not vaccination.) At the age of 14, he was apprenticed for seven years to Daniel Ludlow, a surgeon of Chipping Sodbury, South Gloucestershire, where he gained most of the
Edward Jenner of the previously misunderstood life of the nested cuckoo, a study that combined observation, experiment, and dissection. He described how the newly hatched cuckoo pushed its host's eggs and fledgling chicks out of the nest (contrary to existing belief that the adult cuckoo did it). Having observed this behaviour, Jenner demonstrated an anatomical adaptation for it—the baby cuckoo has a depression in its back, not present after 12 days of life, that enables it to cup eggs and other chicks. The adult does not remain long enough in the area to perform this task. Jenner's findings were published in "Philosophical