leda

As proper nouns the difference between helen and leda

is that helen is , a french type variant of helena while leda is (greek mythology) the wife of tyndareus and mother of helen, clytemnestra and castor and pollux hatched from eggs as a result of a seduction by zeus in the guise of a swan.

Tyndareus is likely misspelled.

Tyndareus has no English definition.

As a proper noun Leda is

the wife of Tyndareus and mother of Helen, Clytemnestra and Castor and Pollux hatched from eggs as a result of a seduction by Zeus in the guise of a swan.