>Does anyone happen to know if Gertrude of Flanders (dau. of Robert I Count
>of Flanders and Artois) b 1070 d 1117 m Henrich III Count of Louvain b 1050
>d 1095, had a dau. Adelheid of Louvain b c 1094 d aft 1158 and m Simon I
>Duke of Lorraine b 1077 d 1139?? And did they, in fact, have a son
>Matthaeus I Duke of Lorraine b 1120 d 1176.
>
>Thanks for any info.
>
>Diane
>
There is reason to believe at least one other of the 4 daughters married
and had issue. In an undated letter 1172 X 1190, Gertrude's descendant
Count Philip of Flanders addressed Count John I of Ponthieu as his kinsman
(*cognatus*--this term *can* signify brother-in-law, but the marriages of
both Philip and John are well documented and this was not the case, so
there must have been some blood relationship between them). The only way
I have been able to account for such a kinship between these two men would
be to assume that Count John's mother Ida, whose parentage is not known,
was in some way a descendant of Gertrude of Flanders. As the issue of her
second marriage, to duke Thiery II of Lorraine are well known, it seems
likely that the link came through Gertrude's first marriage. Ida could
not have been a daughter of that marriage, but she could have been a
granddaughter. As no link has ever been noted between the counts of
Ponthieu and the dukes of Lorraine, I would think that another of
Gertrude's daughters by Henry would have been the more likely ancestress,
though neither the name nor the marriage of that daughter has yet been
established. Certainly the counts of Ponthieu did inherit some rights in
Flanders and a descent from Gertrude would easily account for this. See
my article, "The Origins of English Administration in Ponthieu: An
Unnoticed Document of 1280," *Mediaeval Studies*, 50 (1988), 371-403, esp.
385 and note 65.
John Parsons