The former home of the reguliers in Land van Steyn, (nl:Klooster Emmaüs te Stein), had been lost in a fire in 1549.

The convent they moved to in Gouda, was renovated for them by order of George van Egmond and the former sacristy was remodeled into a choir which housed eleven stained glass windows (today on display in seven windows in the Janskerk (Gouda) in the extra room called the Van der Vorm kapel).

Despite these renovations, the Regulierskerk did not survive long after that, because the monastery reverted to the state after the Protestant Reformation in 1580 and the church was torn down.

In 1580, before destroying the Regulierschurch, the expensive stained glass windows and the accompanying cartoons were moved to the Janskerk, where they were most recently restored in 1922 and given a separate chapel.

Perhaps because of these developments, he became an alcoholic, and is registered as walking in processions drunk, earning him the local nickname Dronken Klaasje.