William I of Holland
William I of was born in 1167.  He died at the age of 55 in 1222.

 Adelheid von Guelders
Adelheid was born before 1195.  She died after 1210.

 Gerard III von Geldern
Gerard III was born after 1210.

 Irmgard von Geldern de Holland
Irmgard von Geldern was born after 1210.

 Floris IV de Holland
Floris IV was born on June 24th, 1210 in The Netherlands.  He died at the age of 24 on July 18th, 1234 in France.