Where a court makes findings of serious misconduct such as forgery in probate proceedings, s 140(2)(c) of the Evidence Act 1995 (NSW) requires the court to take into account the gravity of the allegations even where the proponent of the will bears the onus of proof. The absence of motive for forgery and the implausibility of the alleged forger producing a signature markedly different from the genuine signature are matters bearing on the inherent probability of the alleged misconduct that must be considered. Appellate intervention is warranted where the primary judge's credit-based findings rest on adverse inferences that cannot fairly be regarded as casting doubt on the witnesses' account.
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