'Jantje' probably refers to John I, Count of Holland who died at the age of 15 years, and features in a well known Dutch children's song about The Hague.
After the death of her husband, she acted as regent for her son Dirk VI.
In 1285 Floris V, Count of Holland dammed the Hollandse IJssel connection between the Lek and the Hollandse IJssel.
Count | Holland | Count Basie | count | Count Dracula | Later... with Jools Holland | Jools Holland | The Count of Monte Cristo | New Holland | South Holland | North Holland | Agnieszka Holland | Tony Holland | Holland Tunnel | Holland, Michigan | Imperial Count | Derek Holland | Count of Flanders | Count of Barcelona | Count Basie Orchestra | Thomas Holland, 2nd Earl of Kent | The Voice of Holland | Holland Festival | Gaspar de Guzmán, Count-Duke of Olivares | Count of Soissons | You Can Count on Me | Stuart Holland | Jean-Frédéric Phélypeaux, Count of Maurepas | Eddie Holland | Count Palatine |
In 1662 Countess Sophie Theodore, a scion of the Holland-Brederode family and wife of the Brandenburg general Christian Albert of Dohna, acquired the lands Niederschönhausen and Pankow, then far north of the Berlin city gates.
Elizabeth of Rhuddlan, daughter of Edward I of England, wife of John I, Count of Holland and then of Humphrey de Bohun, 4th Earl of Hereford
When his father died in 1347, Louis succeeded him as Duke of Bavaria (as Louis VI) and Count of Holland and Hainaut together with his five brothers.