Betty Maina is kalenjin - my clanswoman. All Maina, Chuma, Juma, Mwangi, Mwaingi, Maingi, Nyige - etc are Kalenjin names - that are exported to other tribes through circumcision.
AGE-SET NAMES
SEBEI
1. Maina Chumo Sowe Koronkoro Kwoimet Kaplelaich Nyikeao Nyonki
SABAOT (Book or Pok)
2. Sowo Maina Gabaiyak Korongoro Gamnenac Gamnyikewa Nyongiik
NANDI
3. Maina Juma Sawe Kipkoiimet Kaplelach Kimnyike Nyonge
4. Maina Juma Sawe Kipkoiimet Kaplelach Kimnyike Nyongi
5. Maina Chuma Sawe Kipkoimet Kaplelach Kimnyige Nyongi
6. Maina Chuma Sawe Kipkoimet Kaplelach Kimnyigei Nyongi
KIPSIGIS
7. Maina Chuma Sawe Kerongoro* Kablelach Kimnyige Nyonge
8. Maina Chuma Sawe* Kipkoymet Kablelach Kimnyige Nyonge
9. Maina Chuma Sawe Kipkoimet Kaplelach Kipnyige Nyongi
10. Maina Chumo Sawe Korongoro Kaplelach Kipnyige Nyongi
KEYO
11. Maina Chuma Sowe Korongoro Kipkoimet Kablelach Kimnyegeu Nyongi
12. Maina Chumo Sowi Korongoro Kipkoimet Kablalach Kimnyegeo Nyongi
13. Maina Chumo Sawe Korongoro Kipkoimet Kaplelach Kipnyigeu Nyongi
14. Maina Chumo Sawe Korongoro Kipkoimet Kablelech Kimnikeu Nyonki
15. Maina Juma Sawe Korongoro Kipkoimet Kablelach Kimnyige Nyonge
MARAKWET
16. Maina Chumo Sawe Korongoro Kipkoimet Kaplelach Kimnyigei Nyongi
17. Maina Chumo Sawe Korongoro Kaberur* Kablelech Kimnikeu Nyonki
TUGEN
18. Chumo Sawe Korongoro Kipkoimet Kablelech Kimnikeu Nyonki
19. Chumo Sowe Korongoro Kipkoimet Kablelach Kimnyegeo Nyongi
20. Chumo Sowe Korongoro Kipkoimet Kablelech Kimnikieu Nyongi
POKOT
21. Maina Jumo Sowa Karongoro Kip-koimet Kablelach Merkutwa Nyongu
22. Maina Juma Sowe Korongoro Kipkoimet Kaplelac Merkutua Nyongu
23. Maina Juma Sowa Korongoro Kablelach* Mergutwa Nyonge
24. Maina Chuma Sowe Kerongoro Kipkoymet* Merkutwa Nyonge
Bukusu copied word for word...just adding the Ba prefix
Bakolongolo, Bakikwameti, Bakananachi, Bakinyikewi, Banyange, Bamaina, Bachuma, Basawa
other circumscing luhyas copied directly Kolongolo, Kananachi, Kikwameti, Kinyikeu, Nyange, Maina, and Sawa in that order.
Gusii also copied word for word
Kikuyus did minor change
Irungu, Mwangi, Maina, Iregi, Ndemi, Mathathi and Ciira
Yes, this is benefit of having a man or woman from your tribe. Hopefully they can deliver and we move on to production
I am surprised Mwangi is one of those. I can't think of a more Kikuyu sounding name except maybe Mwaura. Maina, yes that one is pretty common.