#23 - MARCHWEITHIAN
Bartrum offers the following
pedigrees under this heading:
(1) "Marchweithian ap Tangwel
ap Lludd ap Llew ap Llyminod angel ap Pasgen ap Urien Rheged"
(2) "Trahaearn ap Tangwel ap
Lludd ap Llen ap Llyminod angel ap Pasgen ap Urien Rheged"
(3) "Trahaearn...brawd Marchweithian"
In his note to these pedigrees,
"Born c. 1020, he was
ancestor of a tribe in Rhufoniog, Is Aled which was reckoned one of Pymtheg Llwyth Gwynedd. The pedigrees make him
first cousin of Tangno which is quite possible chronologically. Trahaearn, brother of Marchweithian, had relatively
few descendants. Two marraiges of his descendants are recorded in Dwnn ii, 103, 154, which agree with the statement
that he was a brother of Marchweithian. The main body of his supposed descendants, however, are traced to Hoedliw ap
Rhiryd ap Pasgen ap Trahaearn, and most of these pedigrees are deficient."
We have discussed the
part of this pedgree extending backward from Lludd in our analysis of Patriarch #22 and will not repeat it here. But
the chronology does not support the claim that Marchweithian was a first-cousin of Tangno; rather it is consistent with him
being a first-cousin of Collwyn. We place the birth of Marchweithian c. 1015, and suggest his father, Tangwel, was a
brother of Tangno and that the father of Tangwel was Cadfael (who is omitted in the pedigree).
We chart the ancestry
of the brothers Marchweithian and Trahaearn as:
850 Pasgen ap Urien
Llewelyn Llyminiog Angel
Marchweithian 1020 Trahaearn
Our analysis of the families
which descended from his brother, Trahaearn, finds that the Trahaearn in the string "Hoedliw ap Rhiryd ap Pasgen ap Trahaearn"
was not "ap Tangwel" as Bartrum thought. The Trahaearn in this sequence was a son of Pasgen ap Trahaearn ap
Tangwel, and the pedigrees of the families who descended from Hoedliw are not chronologically deficient; this
Hoedliw was born c. 1185, two generations later than Bartrum placed him.
The early descendants of Trahaearn are charted as:
1115 Gwenllian 1120 Pasgen
Iorwerth ap Gwgan 1150 Rhiryd 1165
1185 Hoedliw Einion
Ddu ap Cynwrig
 Bartrum charted Hoedliw as a brother of the c. 1115 Gwenllian; both had fathers
called Rhiryd ap Pasgen ap Trahaaearn, but two different men of that name
 Pen. 139(1), 199 and Pen. 139(2), 90 say Gwenllian ferch Rhiryd ap Pasgen
ap Trahaearn married Iorwerth ap Gwgan ap Idnerth ap Edryd. This Iorwerth was the grandfather of Ednyfed Fychan (c.
1165) and he was born c. 1100
 Dwnn ii, 103 says Gwenllian ferch Rhiryd ap Trahaearn ap Pasgen ap Trahaearn
married Einion Ddu ap Cynwrig. Einion Ddu was a brother of Ednyfed Fychan and born c. 1165.