Research Notes:
The Visitation of Yorkshire states that "Thomas Drakes son & heyr to Robert" married "Lucy doughter of Myrfeld Esquyer." and that they were the parents of Rychard Drakes. [1]
The Drax pedigree in Visitations of the North states, [2]
Thomas, sonnne and heire [of Robert] maryed Lucie, dowghter unto John Myrfeld, esquire, and had yssu Edwarde eldest sonne made knight by the Blacke Prince at the battaile of Nancret in Spayne, and there slayne withowte yssu, Richard second sonne and heire,John third sonne a munke in the monstari of Drax, Robert fourth sonne died in Gasconge withowte yssu, Thomas vth sonne slaine at Tunes in Turkey, died withowte yssu, Mary maryed unto Steven Candish.
[1] William Flower, The Visitation of Yorkshire in the years 1563 and 1564 (London: 1881), 103 in the Drakes pedigree (102-104), [InternetArchive].
[2] Charles Henry Hunter Blair and Frederick Walter Dendy, eds., Visitations of the north, or, some early Heraldic Visitations of, and Collections of Pedigrees Relating to, the North of England, Part 2, Publications of the Surtees Society, Vol. 133 (Durham: Andrews & Co, 1921), 102, [FHLCatalog], [FHL].