Floris the First is dead?

Our dear, beloved count Floris the First of Holland is killed in battle. 

While our count was at battle against the men of Utrecht, those horrible men of Utrecht, he was murdered together with hundreds of our husbands, brothers and sons. And the biggest evil is that they were killed while they were resting. He was born in 1025 and assassinated in 1061 AD. He leaves behind his dear wife Geertruida and his children Adelheid, Dirk and Bertha. May they rest in peace.