Regarding: Michael Barstow, William Barstow, George Barstow (three known brothers), John Barstow, (accepted as brother)and Susan (Barstow) Perry (maybe sister). All are attached as children of Matthew.
Bond (Genealogies of Families of Watertown found the baptism at Shelf, Halifax, Yorkshire, 17 Nov 1600, of Michael Barstow, son of Matthew Barstow [Bond 677]. Matthew Wood found the baptism at Halifax, 6 Jan 1600/1, of Michael Barstow, son of Michael Barstow of Northowram [NYGBR 121:98]. I found at https://www.freereg.org.uk The baptisms of Michaels (son of Michael) on 17 Feb 1599 and 18 Jan 1600 at St. john the Baptist in Halifax.
From Anderson Great Migration: "Given the size of this parish and the multiplicity of Barstow families therein, further research needs to be undertaken before we can identify the parents of Michael Barstow and his brothers.)
Is there a reason why we should leave them connected to Matthew? My thought is to create an Unknown Barstow and connect the children.