[1] Esua was a school master and a founder member of the Nigeria Union of Teachers.
[2] He was an Efik, Calabar man, renowned for his dedication to duty and uprightness.
Esua also conducted the 1965 Western Region election, which was violent and was disputed by the opposition United Party Grand Alliance.
[4] A few days before these elections Esua acknowledged that his organisation could not guarantee a free and fair poll.
[5] The widespread electoral abuses may have been a factor in the success of the military coup of January 1966 in which Major General Johnson Aguiyi-Ironsi came to power.