(1) Where it is proved, for the purposes of a proceeding in a court, that a person (in this subsection called the representative ) engaged in particular conduct, whether in or outside this jurisdiction, while the person was a representative of:
(2) Where, for the purposes of establishing in a proceeding in a court that section 819 applies, it is proved that a person did, or omitted to do, a particular act because the person believed at a particular time in good faith that certain matters were the case, then, unless the contrary is proved for those purposes, it is to be presumed for those purposes that it is reasonable to expect that a person in the first-mentioned person's circumstances would so believe and would do, or omit to do, as the case may be, that act because of that belief.