I am a keen amateur genealogist and, prior to 2006, had managed to get back, with some certainty, to c.1650 in Chilmark. I was aware, however, that there were records of the Macey family going back as far as 1539 (namely to John Macy, who was granted a copyhold in that year) so I employed a professional genealogist to help me try and bridge the gap.
1. First of all, she translated John Macy's Will of 1575, as follows:
"In the name of god Amen xxiiiithday of Maye Anno Domini 1575 I John Maycie of the parishe of Chilmarke beinge sicke of body but perfitt of remembrance do make this my last will and testamente in manor and forme folowinge that is to sayeFirst I geve and bequeth my soule unto god almightie and my bodye to be buried in our parish church of Chilmarke called St Margarete Item I geve and bequeth unto our mother church of Sarum viiidItem I geve and bequeth unto my parish church of Chilmarke iiis iiiid Item to be buried in the church I geve and bequeth vis viiid Item I geve and bequeth to my sonne Thomas Maycie a greate crocke and one bruinge caudren Item I geve and bequeth to my sonne Thomas Maycis vii children vii shepeto be endefferently chosen Item I geve and bequeth unto my sonne Phillipe one greate panne ii pewter dyshes and xxs of mony Item I geve and bequeth to my sonne William Maycie xxs of mony Item I geve and bequeth to my Daughter Anstiexxs of monye Item I geve and bequeth to eight of my sonne in lawe Richard Rogers children iiii busshelles of Barley to be Devided emongest them Item I geve and bequeth to my Daughter Agnes Roger vis viiid Item I geve to my daughter Ales Andrewes A panne the which she hath in her kepinge Item I geve to John Maycie the sonne of Richard Maycie A wendlingecalfe of the pryce of xs Item I geve unto Agnes Maycie and helinge Maycie the Daughters of Thomas Maycye one cowe to be equally devided betwene the ii systers Item I geve unto John Maycie the sonne of Thomas Maycie one shepe Item I geve unto my god sonne John clare vid Item I geve unto my god sonne John Snowe vid Item my will is to request Christofer helme and William Stephens to be the oeverseers of this my will and to have for their paynes xxd a pice. Item all the rest of my goodes ungeven or bequethed I geve and bequeth unto Anne my wife and Richard my sonne whom I make my executors of this my last will and testament In wittnes wherof Christofer helmeJohn ClareWilliam StephenSirJohn Morton Curate"
2. By reference to the manorial records, the parish registers and wills, she then came up with the following tentative pedigree:
JOHN MACYEALIAS BANSTONE (1) = ANNE ? (Yeoman) b.1500 – 1510 d.1575
Accordingly, it is thought that Thomas of Nantucket was the great grandson of the original John Macy, and the son of John Macy; this might explain why Thomas' own son was called John. He may also have had a brother, George, who was recorded in Taunton, MA, at around the same time.
I should point out that Thomas Macy was born before the Bishop's Transcripts (which date from 1611) and there are no Chilmark documents which refer to him (at least with any certainty). That he is John Macy's direct descendant, however, is unlikely to be in doubt.