A testatrix who gives sensible, logical and rational reasons for excluding relatives from her will is not to be found lacking testamentary capacity merely because those reasons involve mistaken beliefs, unless the beliefs are delusional in the sense of being fixed, incorrigible false beliefs from which the person cannot be reasoned. The probate costs exception — whereby costs of unsuccessfully opposing probate may be paid from the estate where the testator's conduct caused the litigation — extends to the costs of unsuccessfully seeking to uphold a grant of probate on appeal, at least where the first instance result was not obviously erroneous.
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