In the light of that invoice I take back the suggestion of looking up a Boyd will.
The Post Office Directory 1909-1910 lists at 190 St Vincent Street J and J Boyd and Miller, writers, now Boyds Miller and Thompson.
So James Boyd must have been the solicitor (writer) dealing with someone's will.
The 1881 census lists in London Phillip C Peebles, 38, paper maker, born Scotland, with a family including daughters Violet A, 14; Kate A, 10; Dora F M, 13, plus a huge retinue of sons and servants. They are the family of Phillip Cadell Peebles and Dora Louisa Spark, who were married in Heavitree, Devon in 1865.
Violet Augusta Peebles married George Andrew Drysdale in London in 1890. Kate Alexandra Peebles died unmarried in 1956. Dora Frances Mary Peebles died unmarried in 1939, and probate was granted to Kate Alexander (sic) Peebles.
So it looks to me as if this is the family concerned, as it accounts for Mrs P C Peebles, Miss K A Peebles and Mrs Drysdale.