She was born in Lagos 11 February 1956 to the aristocratic family of Chief and Princess Durosinmi of Irewe town in Ojo Local Government Area, Badagry division. Her mother hails from the Fafunwa Onikoyi Royal Family of Ita-Onikoyi in Idumota, Lagos Island, and her father was a member of the defunct Action Group (AG) and Unity Party of Nigeria (Universitas Pembangunan Nasional), thus making him a long-time disciple of Obafemi Awolowo.
She began her early education at the Unity Assembly Primary School Apapa and Secondary at the Awori-Ajeromi Secondary School. She commenced her sojourn in the teaching profession at the then Lagos State College of, Ijanikin (now Adeniran Ogunsanya College of ) in 1980 where she obtained the National Certificate of (NCE) and later proceeded to the University of Lagos, Akoka, where she obtained her Bachelor of Arts in English (Bachelor) Editor in 1988 and a master"s degree in Adult ( Master of Education ) 1989.
Her determination to keep abreast with technology led her in 2004, to proceed for an Advanced Diploma in Information Technology at the Lagos City Computer College. She also serves as the commissioner of education in Lagos.
Due to her maternal ancestry, the former Deputy Governor bears the Yoruba traditional title Omoba. Between 1990 and 1999, Mistress Sosan left the four walls of the classroom and served as a Principal Officer at the Lagos State Ministry of and then moved to the defunct State Primary Board (SPEB) now Lagos State Universal Basic Board (LSUBEB) as an Assistant Board Secretary.
Later in year 2006 when the state Primary Board transformed to Lagos State Universal Basic Board, she was redeployed to the Department of Communication and Information Technology as the Head of Department (HOD).
As the Head of Department, she was saddled with the responsibility of ensuring computer education and training was given the attention it deserved in Lagos State Public Primary Schools. She was appointed to the position of Deputy Governor by Babatunde Fashola in 2007.
