The St. John Genealogy

Origin and Ancestry DNA Database & Electronic Archive

Iestyn ap Gwrgan, arglwydd of Morgannwg

Male Abt 1030 - Deceased  Submit Photo / DocumentSubmit Photo / Document    Has no ancestors but more than 100 descendants in this family tree.


Personal Information    |    Sources    |    Event Map    |    All

  • Name Iestyn ap Gwrgan   [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11
    Suffix arglwydd of Morgannwg 
    Relationshipwith Suzanne St. John
    Born Abt 1030  of, , Glamorganshire, Wales Find all individuals with events at this location 
    Sosa 16779328 - 16785472 
    Christened {Tribe: Iestyn ap Gwrgan} Find all individuals with events at this location 
    Gender Male 
    AFN JNXC-ML 
    Name Iestin ab Gwrgan  [12
    Name Iestin ap Gwrgant  [13
    Name Jestyn  [14
    Name Justin ap Gwran  [2
    Died Monastery of Llangenys, , Monmouthshire, Wales Find all individuals with events at this location 
    Notes 
    Person ID I105053959  St. John Origin and Ancestry DNA Database
    Last Modified 23 Aug 2013 

    Wife 1 Denis ferch Bleddyn,   b. Abt 1070, of, , Montgomeryshire, Wales Find all individuals with events at this location,   d. Yes, date unknown 
    Married Yes, date unknown 
    Family ID F141612  Group Sheet  |  Family Chart

    Wife 2 Constance "Wen" ferch Cadwgon "Wen",   b. Abt 1030, of, , Radnorshire, Wales Find all individuals with events at this location,   d. Yes, date unknown 
    Children 
    Married: 1x1. Nest ferch Iestyn,   b. Abt 1070, of, , Glamorganshire, Wales Find all individuals with events at this location,   d. Yes, date unknown
    Married: 1x2. Gwenllian ferch Iestyn,   b. Abt 1070, of, , Glamorganshire, Wales Find all individuals with events at this location,   d. Yes, date unknown
    Married: 1x3. Catrin ferch Iestyn,   b. Abt 1070, of, , Glamorganshire, Wales Find all individuals with events at this location,   d. Yes, date unknown
     4. Rhiwallon ab Iestyn,   b. Abt 1070, of, , Glamorganshire, Wales Find all individuals with events at this location,   d. Yes, date unknown
     5. Cynwrig ab Iestyn,   b. Abt 1070, of, , Glamorganshire, Wales Find all individuals with events at this location,   d. Yes, date unknown
     6. Iorwerth ab Iestyn,   b. Abt 1070, of, , Glamorganshire, Wales Find all individuals with events at this location,   d. Yes, date unknown
    Married: 1x7. Gruffudd ab Iestyn,   b. Abt 1070, of, , Glamorganshire, Wales Find all individuals with events at this location,   d. Yes, date unknown
    Married: 1x8. Cadwgon ab Iestyn,   b. Abt 1070, of, , Glamorganshire, Wales Find all individuals with events at this location,   d. Yes, date unknown
    Married: 1x9. Richard ab Iestyn,   b. Abt 1070, of, , Glamorganshire, Wales Find all individuals with events at this location,   d. Yes, date unknown
    Married: 1x10. Gearnad ab Iestyn,   b. Abt 1070, of, , Glamorganshire, Wales Find all individuals with events at this location,   d. Yes, date unknown
    Married: 1x11. Ieuan ab Iestyn,   b. Abt 1070, of, , Glamorganshire, Wales Find all individuals with events at this location,   d. Yes, date unknown
    Married: 1x12. Caradog ab Iestyn, arglwydd of Afan,   b. Abt 1070, of, Afan cantref, Glamorganshire, Wales Find all individuals with events at this location,   d. Yes, date unknown
    Married: 1x13. Madog ab Iestyn, arglwydd of Rhuthin,   b. Abt 1100, of, Rhuthin, Eglwys Fair y Mynydd, Glamorganshire, Wales Find all individuals with events at this location,   d. Yes, date unknown
    Married: 1x14. Rhys ab Iestyn, arglwydd of Resolfen,   b. Abt 1100, of, Resolfen, Glamorganshire, Wales Find all individuals with events at this location,   d. Yes, date unknown
    Family ID F141624  Group Sheet  |  Family Chart

    Wife 3 Dyddgu [1st] ferch Iorwerth,   b. Abt 1070, of, , Radnorshire, Wales Find all individuals with events at this location,   d. Yes, date unknown 
    Family ID F141625  Group Sheet  |  Family Chart

  • Reference  Your Name Here. "Iestyn ap Gwrgan, arglwydd of Morgannwg". The St. John Genealogy. https://stjohngenealogy.com/getperson.php?personID=I105053959&tree=OSA0001 (accessed May 12, 2021).

  • Sources 
    1. [S15684] Brydges, Sir Egerton, 1762-1837. Collin's Peerage of England, Genealogical, Biographical, and Historical, Greatly Augmented, and Continued to the Present Time. 9 vols. London: [T. Bensley], 1812, vol. 6 p. 291.

    2. [S15701] Welsh Pedigrees: A Genealogical Account of Several Ancient Families from which William Davies of Cringell was Descended, and which were Allied to him and his Ancestors by the Marriage of David ap Wm., his Grandfather, with Claudia the Daughter of Thomas ap Richard, Esq., of Baglanhall [NLW Ms. 6614E]. National Library of Wales manuscript number 6614E. Salt Lake City, Utah: Filmed by the Genealogical Society of Utah, 1950., no page numbers.

    3. [S17363] Lloyd, Jacob Youde William. The History of the Princes, the Lords Marcher and the Ancient Nobility of Powys Fodog and the Ancient Lords of Arwystli, Cedewen and Meirionydd. 6 volumes. London: T. Richards, 1881-1887, vol. 1 p. 313; vol. 5 p. 226; vol. 6 p. 417*.

    4. [S17974] Evans, Alcwyn Caryni. British Genealogy. Books A to H. National Library of Wales MSS 12359-12360D. Manuscript filmed by the Genealogical Society of Utah, 1950, book 1 p. 37, 57; book 2 p. B7; book 3 p. C64; book 4 p. D163; book 5 p. E9*; book 8 p. H21*.

    5. [S17983] The Golden Grove Books of Pedigrees. Manuscript, National Library of Wales manuscript number Castell Gorfod 7. Filmed by the Genealogical Society of Utah, 1950, book 4 p. C471; book 17 p. N2041*.

    6. [S17987] Williams, John. Llyfr Baglan, or, the Book of Baglan, Compiled Between the Years 1600 and 1607: Transcribed from the Original Manuscript Preserved in the Public Library at Cardiff. London: Mitchell, Hughes and Clarke, 1910, p. 298*.

    7. [S17997] Dwnn, Lewys; transcribed and edited with notes by Sir Samuel Rush Meyrick. Heraldic Visitations of Wales and Part of the Marches Between the Years 1586 and 1613. 2 volumes. Llandovery: William Rees, 1846, vol. 1 p. 29, 49, 141, 190, 238*; vol. 2 p. 45, 49, 57*, 208, 242, 252, 290.

    8. [S17998] Nicholas, Thomas. Annals and Antiquities of the Counties and County Families of Wales: Containig a Record of All Ranks of the Gentry, Their Lineage, Alliances .... 2 volumes. London: Longmans, Green, Reeder, 1875., vol. 2 p. 621.

    9. [S18000] Bartrum, Peter C. (Peter Clement). Welsh Genealogies, AD 300-1400. 25 volumes, with supplements containing additions and corrections. [Wales]: University of Wales Press, 1980, vol. 2 p. 28; vol. 4 p. 208, 242; vol. 5 p. 301; vol. 6 p. 354; vol. 8 p. 542*, 543, 551, 563; vol. 10 p. 776; vol. 12 p. 936.

    10. [S20250] Authors Vary. Miscellanea Genealogica et Heraldica. London: Hamilton, Adams, 1868-1938, 5th ser. vol. 5 p. 182, 183, 185.

    11. [S16275] Griffith, John Edwards. Pedigrees of Anglesey and Carnarvonshire Families: with Their Collateral Branches in Denbighshire, Merionethshire. Horncastle, England: W.K. Morton, 1914, p. 115, 166, 386.

    12. [S17974] Evans, Alcwyn Caryni. British Genealogy. Books A to H. National Library of Wales MSS 12359-12360D. Manuscript filmed by the Genealogical Society of Utah, 1950, book 4 p. D163; book 8 p. H21.

    13. [S17983] The Golden Grove Books of Pedigrees. Manuscript, National Library of Wales manuscript number Castell Gorfod 7. Filmed by the Genealogical Society of Utah, 1950, book 4 p. C471; book 17 p. N2041.

    14. [S17997] Dwnn, Lewys; transcribed and edited with notes by Sir Samuel Rush Meyrick. Heraldic Visitations of Wales and Part of the Marches Between the Years 1586 and 1613. 2 volumes. Llandovery: William Rees, 1846, vol. 2 p. 290.

  • Event Map
    Link to Google MapsChild - Rhys ab Iestyn, arglwydd of Resolfen - Abt 1100 - of, Resolfen, Glamorganshire, Wales Link to Google Earth
     = Link to Google Earth 


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