House of Saxe-Coburg-Gotha. Alison Weir names four children: Jordanus (born and died in 1236), Agnes (born and died in 1237), Henry (titular king of Jerusalem; 1238 - 1253) and Margaret (wife of the Landgrave Albert II of Thuringia; 1241-1270). Weir wrote about Isabella's death in childbirth, but does not report what happened to the child; perhaps this child was Margaret —and this belief is the most commonly accepted among websites and genealogical investigations. Mary-Anne Everett Green also names four children: Jordanus (born and died in 1236), Agnes (born and died in 1237), Henry (born 18 February 1238) and Margaret (born 1 December 1241). James Panton writes about Isabella's giving birth to four or five children, but does not mention their names. Notes References Bibliography Tuchman, Barbara W. (1978), A Distant Mirror: the Calamitous 14th Century., Alfred A. Knopf, New York, 1984. . External links https://web.archive.org/web/20140130144602/http://www.stupormundi.it/Mogli.htm |- |- |- 1214 births 1241 deaths 13th-century English people 13th-century English women Deaths in childbirth English princesses Holy Roman Empresses Italian queens consort German queens consort Royal consorts of Sicily House of Plantagenet 13th-century Italian women Wives of Frederick II, Holy Roman Emperor 13th-century women of the Holy Roman Empire Children of John, King of England Daughters of kings