I can't help much with this, but I don't think it is written Gaskarth, because the last letter doesn't seem to be h. Perhaps Gaskeard ? Maybe that is a variant spelling of Gaskarth ?
Some very tentative suggestions for the 2nd part:
… Rob(er)t Douthwaite, and Thom(as) Gaskeard[?] and to goo fforward to ye
use of ye said childern. It(em) shee doth geve and bequeath
unto Elizabeth Gaskeard[?], Thomas eldest daughter iijli vjs viijd ...