Date (happened)
1923 (possible)
neville-lectures-index.txt — "When 'Modeste Guillaume' Became G. Mahmud-Ahmad: The 1923 Pivot"
Persons
Modeste Abda'llah Guillaume

In 1923 the man later known as Abdullah shifted identity from 'Modeste Guillaume' to 'G. Mahmud-Ahmad', per research on his advertisements.
Person: Abdullah
Ruling: accepted as possible, Rudi 2026-07-23