There are a few others who know of the boy's presence here but not his identity.

He apparently does not know of our long presence in and contributions to this society.

We moved quietly, for no one was supposed to know of our presence.

No one would know of his presence until he struck.

I'd gone to ground so the culprit could not have known of my presence.

The Americans would know of their presence soon enough, he reasoned.

"Because the less people who know of my presence here, the better, for the moment."

He would have liked to let her know of his presence, but did not want to seem forward.

But Use would prefer he not know of her presence.

No evidence was ever uncovered that they had met, or knew of each other's presence.