"George Washington "adopted" some of Martha's grandchildren (all Martha's children predeceased her leaving in some cases minor children)"
The thing is, in this case, at least three of John Ennis's adopted children were not orphans. I don't know anything about Loren's situation, but Carrie had a surviving widowed father, siblings and grandparents; James had both parents and siblings; and Ronnie had a widowed mother and siblings. And none of them was related in any way to the Ennis family.
