https://archive.org/stream/yalegenealogyhis00yale/yalegenealogyhis00yale_djvu.txtTHE YALES AND WALES
12.
GRIFFITH AP EINION.
At the division of his father's lands he received Cors-y-Gedol as his
portion and he held the office of Woodvp-ard of the Commote of Ardydwy,
Merioneth, at Michaelmas, 1400, also 2 and 3 Henry V. He married
Lowrie, daug-hter and heir of Tudor ap Griffith Vychan, Lord of
Gwyddelwern, Edeirnion, and niece (and in her issue sole heir) of his
brother Owan ap Griffith Vychan, Lord of Glyndyfrdwy, the memor-
able Owen Gl3'ndwr, representative of the dynasties of North Wales,
South Wales, and Powys. Tudor ap Griffith Vjxhan was upwards of
29 3'ears old, 3 Sept. 10 Richard II., 1386, when under the designation
of "Tudor de Glendore," he appeared as a witness in the celebrated
Scrope and Grosvenor controversy. By this alliance Griffith ap Einion
had three sons and two daughters, as follows :
https://en.wikipedia.org/wiki/Gruffudd_Fychan_IIGruffudd Fychan II was married to Elen, daughter of Thomas ap Llywelyn lord of half of the commote of Is Coed and of quarter of Gwynionydd, both in Ceredigion.[2] They had issue:
Madog, died young
Owain ap Gruffudd, later known as Owain Glyndŵr, proclaimed Prince of Wales and leader of the Welsh revolt in September 1400 which lasted to 1412 or 1416. He married Margaret Hanmer, daughter of Sir David Hanmer and had issue.
Lowry, married Robert Puleston, and had issue.
Isabel ferch Gruffudd, married Adda ap Iorwerth Ddu, and had issue.
Gruffudd
Tudur ap Gruffudd, Lord of Gwyddelwern
My question is, which is the correct marriage for Lowrie, the sister of Owain Glyndŵr.
http://www.wikitree.com/wiki/Gruffydd-97 Lowrie, Wife of Robert Puleston
http://europeana-journals.llgc.org.uk/browse/viewpage/llgc-id:2919943/llgc-id:3006194/llgc-id:3006239/getText