Sources

1) Source: The visitation of Yorkshire in the years 1563 and 1564. Reference: 63-66: Constable of Flamborough (Questionable reliability of evidence)
2) Source: Varied - Secondary Source for Medieval Genealogy Details on the Draycote family from a variety of secondary sources.. External Link
https://groups.google.com/g/soc.genealogy.medieval/c/lHIFzCQs7co/m/GSxJj0x5cFoJ. Reference: Post by John P Ravilious dated 20 May 2004 to soc.genealogy.medieval (Questionable reliability of evidence)
3) Source: The visitation of Yorkshire, made in the years 1584/5 Constable of Flamborough, Everingham. Reference: Pages 197-198 (Questionable reliability of evidence)
4) Source: Chancery: Inquisitions Post Mortem, Series I, Henry VI "Constable, Robert, kt, of Faynburgh in Yorks: Yorks...A certain William Saltmersch lately held 2 bovates in Flamborough of Robert, as of his manor of Flamborough, by service of 3s. yearly. Robert granted the manor to Thomas Cumberworth and Robert Hilton , knights, John Ask , and John Chambr , to hold to them and their heirs...n 8 September 1427, he granted the following to Thomas Cumberworth, knight , Robert Hilton, knight , John Ask , and John Chambr : the manor of Flamborough, with all liberties, franchises, advowsons of churches, chapels, and chantries, wreck of sea, vills, hamlets, wards, reliefs, escheats, lands, tenements, meadows, pastures, commons, rents, and services, and reversion of all lands, tenements, rents, and services, that Katherine, mother of Robert, held in dower in Flamborough and Sewerby, and all other reversions belonging to him. He died on 24 May last. Robert Constable is his son and next heir, and was aged 18 and more on the day of his father’s death."Dated: 14 July 1441. External Link
http://discovery.nationalarchives.gov.uk/details/r/C6159824. Reference: C 139/103/28. King's College London, 2014. | Mapping the Medieval Countryside [online]. Available at http://www.inquisitionspostmortem.ac.uk/view/inquisition/25-478/478a (Data from direct source)
5) Source: Chancery: Inquisitions Post Mortem, Series II, and other Inquisitions, Henry VII to Charles I "Robert Constable knt...Writ wanting; inq. 20 June, 3 Hen. VII...He died 23 May last. Marmaduke Constable, knt., aged 31, is his son and heir.". External Link
https://www.british-history.ac.uk/inquis-post-mortem/series2-vol1/pp146-171. Reference: C 142/3/116 (Data from direct source)
6) Source: Chancery: Inquisitions Post Mortem, Series II, and other Inquisitions, Henry VII to Charles I "Agnes Constable, widow of the late Robert Constable, knight... Naffreton and Buttirwik in Rydale by the gift thereof made by Philip Wentworth, knt., and Robert Crane, esq., to her and the said Robert Constable, knt., her husband...She died 20 April last. Marmaduke Constable, knt., aged 40 and more, is her son and heir."Dated: 1496. External Link
https://www.british-history.ac.uk/inquis-post-mortem/series2-vol1/pp504-535. Reference: C 142/11/49 (Data from direct source)
7) Source: Chancery: Inquisitions Post Mortem, Series II, and other Inquisitions, Henry VII to Charles I "John Slawghter (Slaughter), gentleman...By deed dated …., 7 Edw. IV, Roger Dreycott-on-le-moors gave the under-mentioned manors to him and Elizabeth his wife, who survives, and his heirs. He died 27 March, 1 Hen. VII. John Slawghter, aged 16 and more, is his son and heir."Dated:1486. External Link
https://www.british-history.ac.uk/inquis-post-mortem/series2-vol1/pp41-60. Reference: C 142/1/127 (Data from direct source)
8) Source: A topographical and historical description of the parish of Tixall Genealogical notices concerning the intermarriages of the Aston family. Reference: Appendix V (Questionable reliability of evidence)