.Justice Oyewumi was born on 7th August, 1963 in Accra, Ghana to the family of late Oyeleke Ibrahim Akano, father, from Ogbomosho in Ogbomosho North LGA of Oyo State and Limota Ajeley Akano, mother from Accra. She is married with children.
Justice Oyewumi attended Anglican Primary School, Ogbomosho from 1970 to 1977 for FSLC; Baptist High School, Ogbomosho from 1978 to 1983 for WASC and the University of Lagos, Akoka from 1986 to 1989 for LLB. She was called to bar in 1990. She obtained her LLM from the University of Ibadan in 2003. She also holds a Post-Graduate Diploma in Legislative Drafting and a Certificate in Industrial Relations both from the Nigerian Institute of Advanced Legal Studies Akoka, Lagos State in 2000 and 2011 respectively.
Justice Oyewumi performed her NYSC primary assignment with the defunct Savannah Bank, Ilorin in the 1991/92 service year. She started her working career in 1992 with Olujinmi and Akeredolu and Co, law firm, Ibadan as a Legal Pupil. In 1993, she joined Oyo State Ministry of Justice, Ibadan as Senior Legal Officer and was Director, Legal Services, State House of Assembly from 1979 to 2007. She was Deputy Chief Registrar II, FCT Judiciary, Abuja in 2007. She was Chief Magistrate I in the FCT Judiciary before her appointment to the Bench of National Industrial Court of Nigeria. She is also a member of NBA, IBA, Chartered Institute of Arbitrators UK and other professional bodies..