Interesting. Transmara is pretty much dates to 50 - Narok south and west are new settlement. Transmara itself has 'kalenjin' masquerading as Maasai - mostly Nandis and Sabaots - Sunkulis and etc - who were brought from Uasin Ngishu and Mt elgon - after being displaced to pave way for European settlement. These Maasai initially stayed with Kalenjin in North Rift - I guess from 1920 to 1950s - when the decision was made to give them land in Transmara next to other Maasai. Most of them are dual Kalenjin-maa (likes of Rudisha). Transmara had Siria maasai who were forced towards Tanzanai border (Ole Tunai and Konchella). Narok south/West is interesting - It appears Moi brought Tugen masquerading as Maasai - then eventually Kipsigis spilled over - mostly initially to occupy excised portion of Mau forest - and later Maasai sold their land.
How did Kipsigis end up settling in Narok?
I know quite a few Kale and Maa couples, it seems the two tribes are very close, sad to see it come to this. Elders should intervene, it can only benefit Uhuru. Keep the peace.