From the BBC:
Homosexual acts may be outlawed in Kenya but there is a long tradition among some communities of women marrying each other. This is hard to fathom in a country where religious leaders condemn gay unions as “un-African” – and those who dare to declare their partnerships openly often receive a hostile public reaction.
But these cases involving women are not regarded in the same light. If a woman has never had any children, she takes on what is regarded as the male role in a marriage, providing a home for the younger woman, who is then encouraged to take a male sexual partner from her partner’s clan to become pregnant. Her offspring will be regarded as the fruit of the marriage. “I married according to our age-old tradition, where if a woman was not lucky enough to have her own children, she got another woman to honour her with children,” says 67-year-old Juliana Soi.