Tyneisha is of African origin, derived from the Yoruba name 'Oyinkansola', which means 'Gift from God'. It gained popularity in the United States during the late 20th century, likely due to its unique sound and spelling.
"The name Tyneisha appears to have been quite popular among parents from the late 70s to the mid-90s, with a peak of 43 births in 1994. After that, its popularity declined steadily until it reached single digits in the mid-2000s."