You have a point Beth. It looks like the artist chose to include a range of symbols. Broadly speaking, the painted portaits are not reliable sources for jewellery research, except that both Munn and Bury have found Winterhalter to be reliable.
--Previous Message-- : Thank you for these images Mauriz. In the : miniature I can now see a rose, shamrocks : and thistles in the spray brooch beside the : 'harp' brooch. I suspect that the artist has : included symbols of all parts of the United : Kingdom. Whether HM ever had brooches such : as these is an intriguing question. :