The "Margaret Justinson" you show is probably "Margaret Justason" (d/o Philip Justason & Catherine McFarlane of Pennfield, Charlotte, NB). I was always told Margaret married a Vardon and removed from the Pennfield area, but several of her children use to visit the area during their lifetimes. For more information on the Vardon family see:
http://www.rootsweb.com/~nbstpatr/danby.htm