What was the surname of Jane Goodall's second husband, Derek?

The surname of Jane Goodall's second husband, Derek, was Bryceson.

Derek Noel MacLean Bryceson was a British-born Tanzanian politician and conservation official. He first encountered Goodall in the late 1960s while serving in Tanzania’s government, and later became director of the country’s national parks. That role brought him into contact with Goodall’s campaign to protect the Gombe area.

Goodall and Bryceson married in 1975, after both had ended their previous marriages. Their relationship connected Goodall’s scientific work with Tanzania’s conservation administration, particularly as Gombe’s importance as a chimpanzee research site and protected area grew.

A common mix-up is with Hugo van Lawick, Goodall’s first husband. Van Lawick was a Dutch wildlife photographer who filmed and photographed her early Gombe research. Louis Leakey was her mentor, while Robert Hinde supervised her Cambridge doctoral work; neither was her husband.