Mad Willem I van Holland, Count of Holland, was born circa 1165 in The Hague, Netherlands to Floris III van Holland (1140-1190) and Ada of Huntingdon (1139-1206) and died 4 February 1223 of unspecified causes. He married Aleid van Gelre (1187-1218) 1197 JL in Stavoren, Friesland, Netherlands. He married Maria van Brabant (1190-1260) . Notable ancestors include Charlemagne (747-814), Alfred the Great (849-899), Hugh Capet (c940-996). Ancestors are from Belgium, France, the United Kingdom, Germany, Russia, Ukraine, the Byzantine Empire.


Offspring of Willem I van Holland and Aleid van Gelre (1187-1218)
Name Birth Death Joined with
Floris IV van Holland (1210-1234) 14 June 1210 The Hague, Netherlands 19 July 1234 Corbie, France Machteld van Brabant (c1200-1267)

Otto van Holland (?-1249)
Willem van Holland (?-1238)
Richardis van Holland (?-1262)
Ada van Holland (?-1258)

Common ancestors of Willem I van Holland (c1165-1223) and Maria van Brabant (1190-1260)

  1. Dirk II de Lorraine (c1050-1115)
  2. Gerard IV de Lorraine (c1000-1070)
  3. Gerard IV de Lorraine (c1030-1070)
  4. Gertrud von Sachsen (1033-1113)
  5. Hedwige de Namur (?-1080)
  6. Hedwige de Namur (c1011-c1070)
  7. Malcolm III of Scotland (c1031-1093)
  8. Margaret of Wessex (c1045-1093)

Preceded by
Dirk VII
Count of Holland
1203-1222 (usurping Ada)
Succeeded by
Floris IV

Footnotes (including sources)