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From: Douglas Richardson <>
Subject: Re: Children of Isabel of England (Died 1241), Wife of Emperor Frederick II
Date: Sun, 20 Jan 2008 22:18:27 -0800 (PST)
References: <mailman.2351.1200882265.4586.gen-medieval@rootsweb.com> <35bd6501-2a3c-4677-b67a-7b9c2735371d@s13g2000prd.googlegroups.com> <5vVkj.14$d85.84@eagle.america.net>


Dear Newsgroup ~

I just checked one online genealogical database which concerns the
genealogy of the medieval rulers of Italy/Sicily. This website is
located at the following weblink:

http://www.jmarcussen.dk/historie/reference/naples.html

The following mishmash was listed for the children of Emperor
Friedrich (or Frederick) II and his wife, Isabel of England:

1. Henry Charles; * 1235; † Dec. 1253;
2. Margaret = Margareta; * 1237; † 8/8 1270 in Frankfurt am Main;
m 1254 Albrecht der Entartete, † 20/11 1315, Markgraf von Meißen,
Landgraf von Thüringen; they got:
a) Margrave Frederick, claimant to Sicily;
3. Carlotus, from 1242 called Heinrich; * 18/2 1238, † dec. 1253 or
jan. 1254;
4? Frederick of Sicily - existence not controled;
5? Carl Otto - existence not controled;
6? Agnes of Sicily - existence not controled;

No mention is made of the supposed son, Jordan. Also, no primary
sources whatsoever are given for the six children listed above. This
could be why this list of children is such a mess.

Likewise, I note that no mention is made of Emperor Friedrich II's
unnamed daughter who was betrothed in 1238 to Hermann II, Landgrave of
Thüringia. However, because Hermann II is known to have come of age
in 1237, I find it rather doubtful that he was contracted to marry the
infant daughter of Emperor Friedrich that had just been born in
February 1237. Rather, it seems likely to me that Hermann II's
contracted wife was Emperor Friedrich II's illegitimate daughter,
Constance (or Anna), who was married (allegedly in 1244) to Johannes
III Dukas Vatatzes, Emperor of Nicaea. Constance would certainly have
been much closer in age to Hermann. In fact her illegitimacy may well
have been a factor in Hermann II's repudiation of this wife which took
place c.1239.

Best always, Douglas Richardson, Salt Lake City, Utah




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