There are some African sects who claim their roots in Russelism.
http://links.jstor.org/sici?sici=0021-8294(198106)20%3A2%3C130%3AASIF%3E2.0.CO%3B2-V
http://www.watchtowerinformationservice.org/index.php/stories-biographies/joseph-booth-an-african-legend/
"Brother Elliot Kamwana was arrested
and deported by the government at the instigation of the Calvinistic
Scotch missionaries of Bandwe, Lake Nyasa, who
were greatly surprised that their work of years could be so
quickly lifted to the higher plane of our teaching."
(Russell 1909)
In 1912 the enthusiasm was spent. Kamwana’s "Watch Tower movement"
split apart and spread to Rhodesia, Tanganyika and the Congo.
Meanwhile, in 1910, Booth’s allegiance switched to the Seventh
Day Baptists.
The African Watchtower movement, called "Chitawala"
in Rhodesia and "Kitawala" in the Congo persisted as an independent,
multifarious movement. It was eschatological, anti-European and
violent. There were numerous murders, riots, drowning of
"witches" and small native rebellions.
Around 1930 the Jehovah’s Witnesses, the main offshoot
from Russellism, arrived and tried to recapture the movement.
They failed but did make many converts from it. This has given
the Witnesses a "grass roots" aspect not enjoyed by other Western
religions in Africa.