baseborn

bastard, illegitimate

He said, "Though the law did not positively allow the destroying such base-born children, yet it held them to be the children of nobody; that the Church considered them as the children of nobody; and that at the best, they ought to be brought up to the lowest and vilest offices of the commonwealth."

Of lowly birth.

And while the baſe borne Tartars take it vp, You fighting more for honor than for gold: Shall maſſacre those greedie minded ſlaues.

Non-Arabs, of whatever racial origin, were of course baseborn, but so too were many Arabs who, for one reason or another, were not full and free members of a tribe.