This word is from tsuwm's wwftd, at http://home.mn.rr.com/wwftd/
The url tsuwm doesn't bring up the word. Bug him about it.

which seems to me a dandy word, far from worthless.I found a couple sites where
it was used for a very fine small research vessel, and two entries in an online dictionary:
Questuary
(Ques"tu*a*ry) a. [L. quaestuarius, from quaestus gain, profit, quaerere, quaesitum, to seek for, earn.] Studious of profit.
[Obs.] Sir T. Browne.

Questuary
(Ques"tu*a*ry), n. One employed to collect profits. [R.] "The pope's questuaries." Jer. Taylor.

It might even be a good title for an investment broker specialized in serving venture capitalists.