Peter Macharia Kinyanjui has been a popular figure since he became the first Kikuyu Catholic bishop in Kenya.
Bishop Kinyanjui was born in 1921 in Limuru. From his childhood, he attended mass at Holy Family Thigio. He always wanted to be a priest. His parents were Anglicans. His decision to join the Catholic Church was informed by the belief that Catholics had more freedom compared to Protestants.