One main problem with this assertion is that the word lumbwa is a massai word, which means farmer in a derogatory way, and could not have been created by meru people as it is a word copied from masai who describe the kipsigis as lumbwa
I can believe that. The Kale came down herding their cattle from Egypt (Kemet) along the Nile. They then entered Kenya from Sudan - Ethiopia - and settled around Mt Elgon . After a while they dispersed. Some went to Uganda ( Cheptais/ Kapchorua) some to Tanzania and others to Nandi and still others proceeded to Nakuru, Laikipia and Mt Kenya huko. It’s in the history books for example that Kenyatta snr was of laibon ( Kalee/Masai) extraction. Hence the claim to Mt Kenya, first inhabitants
Kikuyu are Bantus from Congo forest
I can imagine everyone wants to roll with the winners. It’s the same way ukienda western unaskia luhyas identifying as kiptoo kama sakaja kipkoskei. Is all good we welcome y’all to the kingdom.
Lakini unajua ukiwa unanyonya makamas wenzako wakielimishwa it gets progressively harder to teach an ageing dog new tricks
Have you read Kenyatta’s autobiography Facing Mt Kenya ? @Mikymas