Source : Webster's Revised Unabridged Dictionary (1913)

Ancestry \An"ces*try\, n. [Cf. OF. ancesserie. See {Ancestor}.]
   1. Condition as to ancestors; ancestral lineage; hence, birth
      or honorable descent.

            Title and ancestry render a good man more
            illustrious, but an ill one more contemptible.
                                                  --Addison.

   2. A series of ancestors or progenitors; lineage, or those
      who compose the line of natural descent.

Source : WordNet®

ancestry
     n 1: the descendants of one individual; "his entire lineage has
          been warriors" [syn: {lineage}, {line}, {line of descent},
           {descent}, {bloodline}, {blood line}, {blood}, {pedigree},
           {origin}, {parentage}, {stemma}, {stock}]
     2: inherited properties shared with others of your bloodline
        [syn: {lineage}, {derivation}, {filiation}]