Stumpf
HCR diary 29.1.1829 at Naylor's, Hammersmith "an old German, a musical instrument maker from Gotha, Stumpf, a twaddling old man but seemingly a good creature and most zealous for the honour of his country"
2.2.1829 call from Strumpf
21.3.1832 Strumpf "I accompanied him to the Aders"