I answered their questions 'to the best of my knowledge'. [=I gave the best answers I could based on what I knew, but I might have answered differently if I had known something else]
No one arrived late 'to my knowledge'. [=I am not aware that anyone arrived late, but it is possible that someone arrived late and I don't know about it]
They went on vacation, 'safe in the knowledge' that the farm would be well cared for while they were away.
(..) You don't understand. To create acceptable transcripts, got your work approved. Listen. Listen, dad, please. All without my knowledge or approval. I don't know what's more impressive, the fact that you got into all these fine schools, or... or that for months you've been lying directly to my face. (..)2016 Captain Fantastic
(..) blind obedience and strike fear into the hearts of the innocent and the uninformed. To her, the only thing worse than death would have been the knowledge that her rotting flesh was to be trapped for all eternity inside a big box... And buried in the middle of a fucking golf course. (..)2016 Captain Fantastic