The Èkó(s) of the Oòduà (Yorùbá) Homeland.

Èkó-Ènde (Ìfẹ́lódùn LGA, State of Ọ̀ṣun)
Èkó-Àkéte (Lagos Island LGA, Lagos State)
Èkó-Àjàlá (Ìfẹ́lódùn LGA, State of Ọ̀ṣun)
Èkó – Efun ( Amongst The Olukumi of Delta state)

Ọtín River is a very important one in Yorùbá history. It was the river that drowned the highest number of terrible invaders of the Homeland in the Jálumi war of November 1, 1878.
In fact, There’s atleast one ODU IFÁ that mentioned Èkó so tell us how Èkó isn’t Yorùbá word.
Source: Oluwo Jogbodo Orunmila
Owonrin méjì

“The birth odu of èkó (Lagos Island)
Eko is from odu Ifá owonrin meji ( it the red feather of parrot)

Eti osa means by the lagoon
Osa or osara is lagoon according to odu Ifá irete ogbe.
EKO KO WON YUN
EKO KO WON BO
ADIFA FUN ORUNMILA NIJO TI BABA NSAWO LO SAGBAIGBO IFE OLUKIRIBITI
EBO NI WON PE KI BABA O SE
O GBO EBO NBE O SI SEBO
NJE EKO KO WON YUN O
EKO KO WON BO
ODE TAWO BALO ALOBO NI
Refu-refu Landana eyin, Gbangba Lakiribiti, Adifa fun OSARA Tin se Olori Omi Lale Ife, Wonni ko karanle Ebo lawope kose,
Olomo Lolaye, Osara mo komode ooooo.”

So tell us how Èkó isn’t Yorùbá Word?!