This is a working list.
I will add or subtract names as I research further.
About the Order of the Garter
(click the link above for Wikipedia page)
Edward, Prince of Wales AKA the Black Prince (founding member #1, 1348)
Thomas Beauchamp, 3rd Earl of Warwick (founding member #3, 1348)
Ralph, 1st Earl of Stafford (founding member #5, 1348)
Sir Thomas Holland (founding member #13, 1348)
Sir John Grey (founding member #14, 1348)
John of Gaunt AKA John Plantagenet (member #36, 1360)
Edward Despencer (member #38, 1361)
Henry Percy, 1st Earl of Northumberland (member #43, 1366)
John Neville, 3rd Baron Neville of Raby (member #46, 1369)
Sir William Beauchamp (member #60, 1376)
Sir Henry Percy (member #77, 1388)
Thomas le Despencer (member #80, 1388)
Robert Willoughby, 6th Baron Willoughby de Eresby (1416)
Edmund Beaufort (member #150, 1436)
Henry Stafford, 2nd Duke of Buckingham (member #211, c. 1474)
Henry Percy, 4th Earl of Northumberland (member #213, 1474)
Edward Stafford, 3rd Duke of Buckingham (member #248, 1495)
George Neville, 3rd Lord Abergavenny (member #271, 1513)
(click on names for Wikipedia pages)