different between whereabout vs whereto

English

where +? about

whereabout (not comparable)

(archaic) About which; concerning which.
- 1594, Richard Hooker, Of the Lawes of Ecclesiastical Politie
  the object whereabout they are conversant
About where. (Can we add an example for this sense?)

From Middle English wherto, equivalent to where +? to.

whereto (not comparable)

(archaic, interrogative) To what; to which place, whither?
(obsolete, interrogative) To what end; wherefore?
(archaic, relative) To which.
- 1658, Thomas Browne, The Garden of Cyrus:
  According whereto Xenophon describeth his gallant plantation at Sardis, thus rendred by Strebæus.

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