It is settled, that the burden of proof of the genuiness and authenticity of a WILL lies on the party propounding it. Where there is a dispute as to a WILL, as in this case, the person who propounds it must clearly show by evidence that prima facie everything is in order that is to say that there has been due execution and that the testator had the necessary mental capacity and was a free agent. Having done that the burden is then cast upon the party who attacked the WILL to substantiate by evidence the allegation he made. This principle of law was very clearly enunciated in the case of Bafunke Johnson & ors vs. Akinola Maja & ors 13 WACA 290,291 – 292 cited supra by Appellants’ counsel where the court held as follows:- “The onus of proof shifts. In the first stage where there is a dispute as to a WILL those who profound it must clearly show by evidence that prima facie all is in order. Thereafter the burden is cast upon those who attacked the WILL and they are required to substantiate by evidence the allegations they have made. The decision must ultimately depend upon a consideration (having regard to the shifting burden of proof), of the value of all the evidence adduced by both parties.” See also Adebajo vs. Adebajo supra, Okelola v. Boyle supra and Egharevba vs. Oruonghae (2001) 11 NWLR (Pt. 724) 318, and Amu v. Amu (2000) 7 NWLR (Pt. 663) 170 -171, 174.
— A.G. Mshelia, JCA. Ize-Iyamu v Alonge & Ors. (2007) – CA/L/184/03