How Rigathi Gachagua's mother, Martha Kirigo met former president Moi. Sunday, April 2, 2023 - For a long time, there have been rumours about Moi being Rigathi Gachagua's biological father. It has since been established that Gachagua was indeed sired by Moi in 1965. His original name was Rigathi Kiprono. He later changed to Gachagua from…