'Well known' in the Bible

For, no one, anything in secret, doeth, and yet is seeking, himself, to be well-known. If, these things, thou art doing, manifest thyself unto the world.

The place was well known to Judas, the betrayer, for Jesus and his disciples had often met there.

Simon Peter followed along with another disciple. [Note: Some think this refers to the apostle John himself, but there is no strong evidence in favor of that conclusion]. Now that disciple was [well-] known to the head priest, so was able to enter his courtyard with Jesus

while Peter stood outside at the gate. So, the other disciple, who was [well-] known to the head priest, went outside and spoke to the girl gatekeeper, [who] then brought Peter inside [too].