Lillian Seenoi-Barr was voted to represent the Foyleside area of Derry and Strabane Council in Northern Ireland.
"I’m beyond delighted to have gained nearly 1,000 first preference votes and to now have an electoral mandate in my own right. The people have spoken loud and clear. For the most part, they are rewarding hard work. But it’s also clear to see their frustration at the continuing lack of a functioning Assembly and obstruction of a nationalist first minister."
The Councillor was elected under the Social Democratic and Labour Party (SDLP).
“I am proud to be part of the Derry SDLP team that puts people first. I look forward to continuing working hard for the people of Derry,” she said.
The Kenyan activist lives in Northern Ireland and is the founder of the North West Migrants Forum, which supports the ethnic minority in the region.
The Kenyan also did human rights work back at home for fighting the rights of Maasai women and girls by rescuing them from forced marriage and female genital mutilation.
Narok Senator Ledama Olekina took to Twitter to congratulate her
"Congratulations to my baby sister Lilian Seenoi. The first-ever black person to be elected as a councillor in Northern Ireland, United Kingdom. May the Good Lord open many doors for you," Ledama said.