I've argued that one's knowledge of Christ as necessary for salvation may not be necessary. That is, folks may be saved by Christ without knowing that Christ has saved them.
Less than a week after the Reformation pericope. <sigh>
Yup, the emphasis is on God's grace, not our knowledge of it.
Actually, the emphasis was on salvation through faith.
The gifts in baptism are given and received through faith. Faith receives the gifts. This is true with infants who have faith and who believe.
My statement was about "knowledge," not faith. Certainly infants have faith; or, perhaps, better stated, trust. In an odd way, they don't have the power to refuse to trust the care and love that parents/guardians give them. They didn't have the power to refuse to be born.