Kenya's founding President Mzee Jomo Kenyatta was a polygamist who married four wives.
The four were Grace Wahu, Edna Clarke, Grace Wanjiku and Ngina Kenyatta.
Ngina, Kenyatta's fourth wife, is the mother to President Uhuru Kenyatta, Kenya's fourth Head of State.
Jomo's third wife, Wanjiku, was the daughter of one of Kiambu's famous colonial chiefs Koinange Wa Mbiyu, a resident of Njunu Village in the current Kiambaa Constituency.
Wanjiku was the sister to Peter Mbiyu Koinange, a powerful Cabinet Minister in Mzee Kenyatta's administration.
Therefore, it goes without saying Mbiyu was Jomo's brother-in-law and as a result President Uhuru's step-uncle.
Mbiyu served as Member of Parliament for Kiambaa for 16 years from 1963 to 1979 when he was ousted by billionaire businessman Njenga Karume.
Besides being an MP, he also served as Minister for State in the Office of the President, Pan-African Affairs, Foreign Affairs and Education.
Those who knew Mbiyu say he was very secretive and thus little was known about his private life.
Among his secret engagements, which became public long after his death in 1981, was membership in the Freemasons Society.
Mbiyu's membership to the Freemason's was revealed in a letter dated June 1, 1970, in which he was required to attend a special meeting.
"You are summoned to attend the Lodge at Freemasons Hall, Nairobi, on Friday 19, 1970 at 6.30 pm. The Lodge will be tyled up at 6.45 precisely. By command of the Right Worshipful Master, Brother M. Basheen Chaudry," reads part of the letter seen by Daily Nation.
The letter from Murad Kassam, the secretary of the Freemasons, directed him to attend the event while wearing 'dinner jacket and white gloves'.
The agenda of the meeting, according to the letter, was to “open the Lodge, read summons covering the meeting and ballot for initiation into Freemasons of Mr Humphrey Rugunda Njoroge".
Njoroge, who passed away in 1999, was then the Assistant Exchange Controller, Central Bank of Kenya (CBK).
He hailed from Kanyariri village, Kabete Constituency in Kiambu County.
Freemasons meetings are open only to members and candidates who have been approved for membership.
For one to join the 'private but not secret' society, one must be invited by a 'brother' and meet the set qualifications.
The Nairobi Freemason’s Hall along Nyerere Road has for long been associated with devil worship, an allegation the society has strongly denied.
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