 Less is known of Mabruki, the other caravan leader, but he was later known as Mabruki Speke, and like Bombay became one of East Africa's great caravan leaders and was also a member of the Yao tribe like Bombay.Because of Speke's recommendations both Bombay and Mabruki served on Henry Stanley's 1871 expedition to find Livingstone.On 26 September 1858 the return journey from Kazeh was started with 152 porters; both men had to return as their military leaves were coming to an end although Jeal contends that they could have extended the trip by asking for an extension as their clear mission statement of the Royal Geographical Society (RGS) was to find the source of the Nile.