Mary and Reginald (Rex) Collison, an elderly Canadian-American couple, arrived in Ruanda-Urundi (Burundi) from Uganda and were named Knights of Bahá’u’lláh. [BW13:455]
For the story of Mary Collison’s life see BW15:486–8 as well as Servants of the Glory page34.
Arriving in July was Dunduzu Chisza, a young Baha'i from Malawi, (then Nyasaland) The earliest Rwandan Bahá’í whose name is recorded was Alphonse Semanyenzi. [The Bahá'í Faith in Rwanda website; BWNS349]
The first Bahá’í to travel through Rwanda may have been Marthe Molitor c. 1947 after becoming a Bahá'í in Belgium. She moved on to the Belgian Congo. [Taarifa]