Using Luis González, Justo. “Justin (ca. 100–ca. 165).” Edited by Justo L. González. Translated by Suzanne E. Hoeferkamp Segovia. The Westminster Dictionary of Theologians. Louisville, KY; London: Westminster John Knox Press, 2006. as an example
The Headwords are not coded with LCV entries pointing to Factbook: Yes, I know the picture is selection rather than headword but the behavior is the same in this case.

This means that I get a search argument of "Justin" rather than "<Biography = Justin Martyr>". I would much prefer the latter to the former.