E-Sir was born Issah Mmari, in May 20th 1981 in California, Nairobi, Kenya. He went through primary school at St Ann's Junior Academy and later attended high school at Brook-House Senior School. It was during high school that E-Sir started rhyming and writing poetry initially for fun.
In 1998 E-Sir decided to take his music seriously and achieve his lifelong dream, of owning a recording studio. For two years he shopped around for the right producer without much success.
