Around 4,300 years before present (YBP), the paternal lineage of E-Y17859 took shape as it diverged from the common ancestor E-Z813 branch.
The most recent common ancestor (TMRCA) of this branch is estimated to have been born around 4,000 years before the present (YBP).
See it on 
YTree
SNPs
Currently defining this branch
Y18174, Y17859, FT16468(H), FT17288(H), FTC493(H), Y18171, Y18172, Y18173, Y18170, Y196996, FT15416(H).
Samples
Within our knowledge, E-Y17859 is the ancestor of 76 Somali samples.
Sub-branches
68 sub-branches with Somali samples