Michael Matthew Groat PhD's Genealogical Database
Individuals: 97,713 Families: 61,838
Gedcom Last Modified: December 14, 2025 00:59:10
King Dyfnwallon of Cérédigion
- Preferred Name: King Dyfnwallon of Cérédigion [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15]
- Alternate Name: Dyfnwal ap Arthwyr
- Alternate Name: Dyfnwallon of Wales
- Alternate Name: Dyfnwal ap Asthin
- Alternate Name: Dyfnwallon ap Arthen of Ceredigion
- Alternate Name: Dyfnwallon ap Arthgen
- Gender: M
- Birth: 754 in Cardiganshire, Wales at LATI: N2.0842 LONG: E4.6579
- Fact: with note: Description: https://www.geni.com/people/Dyfnwallon-ap-Arthen/6000000000424680664
- Death: 841 in Cérédigion, Gwynedd, Wales at LATI: N2.9553 LONG: E4.0594
- Title (Nobility): with note: Description: Prince of Seisllwg
- Burial: 841 in Cérédigion, Gwynedd, Wales at LATI: N2.9553 LONG: E4.0594
- Title (Nobility): 807 with note: Description: King of Cérédigion
- Fact: NOT MARRIED with note: Description: https://www.geni.com/people/Dyfnwallon-ap-Arthen/6000000000424680664
- FSID: LD3L-7M9
- Alt. Death: 830 in Cérédigion, Gwynedd, Wales at LATI: N2.9553 LONG: E4.0594
- Title (Nobility): 807 with note: Description: King of Seisyllwg
- LifeSketch: NOT MARRIED with note: Description: Dyfnwallon was the son of Arthgen. His reign commenced in 807, but it is not certain how long he ruled and he may have survived into the 830s. At this time Merfyn Frych of Gwynedd was beginning his territorial expansion and Dyfnwallon must have had prob
- Notes:
=== Life Sketch ===
Dyfnwallon was the son of Arthgen. His reign commenced in 807, but it is not certain how long he ruled and he may have survived into the 830s. At this time Merfyn Frych of Gwynedd was beginning his territorial expansion and Dyfnwallon must have had problems in retaining his independence. He was succeeded by his son Meurig.
BIO: from British Kings and Queens (Mike Ashley) p 132
__________________________________________________
Dyfnwallon ab Arthen ap Seisyll ap Clydog was born, say, 770. [1]
Dyfnwallon was the son of Arther, who died 807, son of Seisyllwg, fl 730, son of Clydawc, son of Arudeu, son of Argloes, son of Podew, son of Seruel, son of Vsai, son of Ceredig, son of Cunneda (& Vala), son of Aeternus, son of Paternus, son of Tacitus. Vala was daughter of Coel Hen, qv.
from : https://www.wikitree.com/wiki/Ab_Arthen-1
=== !SOURCE: spouse sealing: film #1760954. ===
!SOURCE: spouse sealing: film #1760954. NAME: surname is also shown as: ORTIN.
=== Prince of Ceredigion ===
Prince of Ceredigion
=== Alternate birthplace: , Cardigan, Wales ===
Alternate birthplace: , Cardigan, Wales (IGI (International Genealogical Index))
=== !Aristocratic & Royal Ancestors GS 929.2 ===
!Aristocratic & Royal Ancestors GS 929.242 H249t p. 904
=== AFN: FJH0-Z3 ===
AFN: FJH0-Z3
=== Ancestral File Number: FJH0-Z3 !"Ro ===
Ancestral File Number: FJH0-Z3 !"Royal Ancestors" by Michel Call, 1989, Chart # 11610, # 11611, # 11612.
=== !1. Bartrum, 300-1400, pg. 6 !1. Bartrum ===
!1. Bartrum, 300-1400, pg. 6 !1. Bartrum, 300-1400, pg. 6
=== !#4568> Welsh Genealogies Ad 300-1400,-v ===
!#4568> Welsh Genealogies Ad 300-1400,-v1-p6* (FHL #6025561); !#249-NS-v2-p364; ARCH REC> Plantagenet Ancestry; Ancestral Lines, Jones; Wurts Magna Charta; History of the Princes of South Wales; Eminent Welshmen; ([Dufnwal], born 755); FN #FJH0Z3;
=== From Ancestral File (TM), data as of 5 J ===
From Ancestral File (TM), data as of 5 JAN 1998.
=== Ancestral File Number: FJH0-Z3 ===
Ancestral File Number: FJH0-Z3
=== The son of Arthgen, Dyfnwallon's reign c ===
The son of Arthgen, Dyfnwallon's reign commenced it 807 and may have survived into the 830s.
=== 5946 1 REFN 34336 ===
5946 1 REFN 34336
=== I CHANGED BIRTHDATE FROM ABT 750 TO ABOU ===
I CHANGED BIRTHDATE FROM ABT 750 TO ABOUT 745---PED OF AUGUSTINE H. AYERS
=== 1. CD V707-01, Vol 07 World Family Tree ===
1. CD V707-01, Vol 07 World Family Tree, dated b1996, BroderbundSoftware, Inc., Pedigree #1451.
=== !SOURCE: "Royal Ancestors," PC #610. ===
!SOURCE: "Royal Ancestors," PC #610.
Preferred Parents:
Father: Arthwyr ap Seisyll, b. ABT 721 in Ceredigion, Gwynedd, Wales d. 807 in Ceredigion, Gwynedd, Wales
Mother: Morfyl ferch Cadifor, b. 732 in Wales d. AFT 755 in Wales
Sources:
- Title: Legacy NFS Source: Dyfnwallon AP ARTHEN - birth: about 0755; Cardigan, Wales, United Kingdom
Author: Ancestral File.LDS Church. Family History Library.
Note: birth: about 0755; Cardigan, Wales, United Kingdom
birth: about 0755; Cardigan, Wales, United Kingdom
Page: Migrated from user-supplied source citation: urn:familysearch:source:2198868384
- Title: Legacy NFS Source: Dyfnwallen Ap Arthen - birth: 0755; Cardigan, Wales, United Kingdom
Author: Ratcliff3.FTW, Not Given
Note: birth: 0755; Cardigan, Wales, United Kingdom
Source Media Type: Other
Source Media Type: Other
Page: Migrated from user-supplied source citation: urn:familysearch:source:2737222804
- Title: Ancestry Family Trees
Author: Ancestry Family Tree
Publication: Name: http://search.ancestry.com/cgi-bin/sse.dll?dbid=9000&h=4&indiv=try;
- Title: Legacy NFS Source: Dyfnwallen Ap Arthen -
Author: #8757
Page: Migrated from user-supplied source citation: urn:familysearch:source:2036700769
- Title: Legacy NFS Source: Dyfnwallen Ap Arthen - birth: 0755; Cardigan, Wales, United Kingdom
Author: 160010.GED, Not Given
Note: birth: 0755; Cardigan, Wales, United Kingdom
Source Media Type: Other
Source Media Type: Other
Page: Migrated from user-supplied source citation: urn:familysearch:source:2737222791
- Title: Legacy NFS Source: Dyfnwallon ab Arthwyr King of Seisyllwg -
Author: Welsh Genealogies, AD 300-1400; Peter C Bartrum, Page number: 6
Page: Migrated from user-supplied source citation: urn:familysearch:source:2736742563
- Title: Legacy NFS Source: Dyfnwallen Ap Arthen -
Author: #8737
Page: Migrated from user-supplied source citation: urn:familysearch:source:2036700773
- Title: Legacy NFS Source: Dyfnwallen Ap Arthen -
Author: The Church of Jesus Christ of Latter-day Saints, Ancestral File (R) (Copyright (c) 1987, June 1998, data as of 5 January, Family History Library, 35 N West Temple Street, Salt Lake City, Utah 84150 USA, 35 N West Temple Street, Salt Lake City, Utah 84150 USA~~35 N West Temple Street~~Salt Lake City, Utah 8415 35 N West Temple Street Salt Lake City, Utah 84150 USA
Page: Migrated from user-supplied source citation: urn:familysearch:source:2036720098
- Title: Legacy NFS Source: Dyfnwallen Ap Arthen -
Author: Ancestral File (R), The Church of Jesus Christ of Latter-day Saints, Copyright (c) 1987, June 1998, data as of 5 January 1998, Family History Library, 35 N West Temple Street, Salt Lake City, Utah 84150 USA
Page: Migrated from user-supplied source citation: urn:familysearch:source:2035901749
- Title: Legacy NFS Source: Dyfnwallen Ap Arthen -
Author: Ancestral File (R), The Church of Jesus Christ of Latter-day Saints, Copyright (c) 1987, June 1998, data as of 5 January 1998, Family History Library, 35 N West Temple Street, Salt Lake City, Utah 84150 USA
Page: Migrated from user-supplied source citation: urn:familysearch:source:2001880049
- Title: Legacy NFS Source: Dyfnwallen Ap Arthen -
Author: Ancestral File (TM), The Church of Jesus Christ of Latter-day Saints, July 1996 (c), data as of 2 January 1996
Page: Migrated from user-supplied source citation: urn:familysearch:source:2737222795
- Title: Legacy NFS Source: Dyfnwallen Ap Arthen -
Author: Ancestral File (R), The Church of Jesus Christ of Latter-day Saints, Copyright (c) 1987, June 1998, data as of 5 January 1998, Family History Library, 35 N West Temple Street, Salt Lake City, Utah 84150 USA
Page: Migrated from user-supplied source citation: urn:familysearch:source:2941801618
- Title: Legacy NFS Source: Dyfnwallen Ap Arthen -
Author: #8758
Page: Migrated from user-supplied source citation: urn:familysearch:source:2036700772
- Title: Legacy NFS Source: Dyfnwallen Ap Arthen -
Author: #8734
Page: Migrated from user-supplied source citation: urn:familysearch:source:2036700770
- Title: Millennium File
Publication: Name: http://search.ancestry.com/collections/7249/records/10221624;
Master Index
| Pedigree Chart
| Descendency Chart
Please send genealogical corrections, additions, or comments to Michael Matthew Groat PhD
Created by GIMMWebService Version 1.0.3 (Program Information), Copyright 2023 © Michael Groat
(Web design layout and pedigree indentation subroutine) Copyright 1996 © Randy Winch (gumby@edge.net) and Tim Doyle (tdoyle@doit.com)
(Internal GEDCOM data structures and GEDCOM file parsing) Copyright 2014-2021 © Giulio Genovese (giulio.genovese@gmail.com)
Like the program that you see? Any support is appreciated!
