1895 unresolved Modeste Guillaume immigrates to the United States with Modeste Bel Guillaume 2 sources
between 1905 and 1905 unresolved Abdullah between Glee Club and Bel Canto Studio Atlantic City possible with Modeste Bel Guillaume 2 sources
19 August 1905 unresolved Glee Club performs for Booker T. Washington South Weymouth, Massachusetts with Modeste Bel Guillaume 4 sources
21 January 1909 unresolved Pekin Theatre playbill credits M. Bel Guillaume arrangement Chicago with Modeste Bel Guillaume 2 sources
1911 unresolved Guillaume recital announced for Monday, the 20th Greensboro, North Carolina with Modeste Bel Guillaume 11 sources
11 December 1911 unresolved Busy 20 Club (Warren M.E. Church) secures Dr. Modeste Abdallah Guillaume for Dec. 11 program Pittsburgh with Modeste Bel Guillaume 28 sources
between 1914 and 1914 unresolved Modeste Abdallah Guillaume runs Bel Canto Conservatory in Atlantic City Atlantic City with Modeste Bel Guillaume 14 sources
26 March 1914 unresolved People's Choral Society Concert Featuring Modeste Abda'llah Guillaume Philadelphia with Modeste Bel Guillaume 6 sources
2 December 1919 unresolved Ruth Thomas Reid joins Bel Canto Conservatory 1708 Arctic Avenue with Modeste Bel Guillaume, Ruth Thomas Reid 7 sources
15 February 1920 unresolved G. M. Abdallah begins Sunday lecture series at the Church of the Religion of Love Currie Building, Atlantic City with Modeste Bel Guillaume 1 source
22 August 1920 unresolved Abda’llah conducts a Sunday service at the First Church of Spiritualistic Love Atlantic City with Modeste Bel Guillaume 2 sources
29 August 1920 unresolved G. M. Abda’llah lectures on ‘The Psychic Soul and Solar Spirit’ Currie Building, Atlantic City with Modeste Bel Guillaume 1 source
1923 unresolved Identity pivot: 'Modeste Guillaume' begins advertising as G. Mahmud-Ahmad Abdoullah with Modeste Bel Guillaume 2 sources
1935 unresolved G. M. Ahmad-Abdoullah publishes 'Ave Maria / Glorified Presence Thou Art Our Praise' New York City with Modeste Bel Guillaume 2 sources
24 January 1935 unresolved G. M. Ahmad-Abdoullah applies to copyright 'Friendless Friend' New York City with Modeste Bel Guillaume 1 source
30 January 1935 unresolved G. M. Ahmad-Abdoullah applies to copyright 'Peace and Rest' New York City with Modeste Bel Guillaume 1 source