Yes; the parson says this was the old sacristy.

The door of the old sacristy opened into the choir, and from the sacristy a broken window gave passage into the forest.

On the left hand of the choir is what is called the old sacristy, with the peculiarities or notabilities of which I am not acquainted.

Brunelleschi's design for the Old Sacristy was followed but made more severe.

The S. Lorenzo cloisters may be entered either from a side door in the church close to the Old Sacristy or from the piazza.

(It struck him with an unpleasant shock, considering the form of his previous metaphor, that he should have taken Frank into the old sacristy.)