"about this, with regard to this matter," c. 1200, from here + about. Meaning "in the vicinity, near here" is from early 13c. Hereabouts, with adverbial genitive -s-, is from 1580s.
the people are friendly hereabouts
Hercules
Hercynian
herd
herdsman
here
hereabout
hereafter
hereby
hereditable
hereditament
hereditary