Mercy Nnenda Chinwo was born on 5 September 1990 in Port Harcourt, Rivers state. She is the fourth child in a family of five (first daughter). Chinwo got involved in music at a very early age, being a member of the children's choir in her church and transitioning to the adult choir prior to launching her musical career. Mercy Chinwo released her first single, "Testimony", in 2015, and "Igwe" a year later. In 2017, Mercy Chinwo signed to Gospel Music Label EeZee Conceptz. In 2018, Mercy Chinwo was awarded the Best Gospel Artiste at the CLIMAX Awards 2018. In 2019, at the maiden edition of the Africa Gospel Awards Festival (AGAFEST 2019) Mercy Chinwo was named winner in the categories Africa Gospel New Artiste of the Year, Africa Gospel Female Artiste of the Year and Africa Gospel Song of the Year (Excess Love).