discover somebody's identity

They discovered their father's identity only after his death in 1974.

And done quite well, of course, until the police had discovered his identity.

She'd always been there for him, but he hadn't discovered her true identity until a few years before.

She had no idea if the police were close to discovering her identity.

It took her only a moment to discover its identity.

Only on her wedding day had she discovered his true identity.

"I know how much you wanted to discover your father's identity."

To have discovered my identity, for instance, which is a State secret.

This is where he discovers the identity of his parents.

In order to do so, he must discover the identity of his father's killers.