The yaqubi imams hail from the abgal clan, do you know what bah is the abgal clan? They're bah ajuraan and not any bah but that of the ruling family. Already by the time of abgal the ajuraan were the ruling family of southern somalia. Do you know how many the imam yaqub count until abgal? He counts 10, that means the ajuraan were already ruling for ten generation until imam yaqub;s time which translates to at least 300 years.
I don't think i can convince you on this one so let's agree to disagree.