HCR diary 21.4.1820 Robinson's 3rd day back in London "had a long walk - I found neither Miss Vardill nor the Flaxmans nor Aders at home"
22.1.1826 Mrs Vardill died Tuesday, Robinson and Drewett execs
2.2.1826 "after dinner to Nivens, Miss Flaxman & Miss Denman there"
…
HCR diary 4.6.1834 "I had to breakfast with me Vogel von Vogelstein, Aders and Mayer and an agreeable morning. The painter is an intelligent man and not overpowering - He is ennobled by the King of Saxony and hence from Vogel becomes von Vogelstein. Aders and he had points of union to talk on"
Carl Christian Vogel von Vogelstein 1788-1868 (en.wikipedia)