English: habitational name from
any of various places so named, as for example Henwood in Cornwall, in
Linkinhorne parish, which is named from Old English henn ‘hen’, ‘wild bird’ +
wudu ‘wood’, or Hen Wood in Wootton, Oxfordshire (formerly in Berkshire), which
is named from Old English hīwan ‘religious community’ (genitive plural hīgna) +
wudu. So far this line that I am following is not from Cornwall but from Hampshire, England. I would have to compare the dna from a Cornwall native to our dna to see if there's a match. If so, the the Hampshire Henwoods could have stemmed from Cornwall.
Resource: http://names.whitepages.com/Wesley/Henwood