Lady Poltimore initially owned the Poltimore tiara, having bought it from Garrard in 1870.

Source: https://www.express.co.uk/life-style/style/1803348/princess-margaret-wedding-tiara-value

Police Constable Joseph Garrard, of Weymouth police, said: “I am looking to speak to anyone who witnessed this incident and may have information to help our enquiries.

Source: https://www.dorsetecho.co.uk/news/23448755.three-injured-weymouth-affray-involving-van-bike-car/?ref=rss

Princess Diana had chosen the ring from a selection presented by the Crown jewellers, Garrard of Mayfair upon her engagement to Prince Charles.

Source: https://www.dailymail.co.uk/femail/article-12693125/Kates-dazzling-deeply-personal-jewellery-Crown.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

The Attallah cross in the fleurée style – distinctive through its flowery design details – is a pendant created in 1920s by court jewelers Garrard, which Princess Diana was said to have admired.

Source: https://www.forbes.com/sites/anthonydemarco/2023/01/18/kim-kardashian-acquires-bejeweled-cross-worn-by-princess-diana-for-197453/