Dholuo or Luo or is spoken around the shores of Lake Victoria in Kenya, Sudan and Tanzania by about 3 million people. It is a member of the Nilo-Saharan language family. The language has no official status and is used to some extent in schools, churches and on the radio.
Since the 1960s, efforts have been made to standardise the spelling of Luo and other Bantu languages.
source
wikipedia.org,
omniglot.com &
ethnologue.com