House of Perseus (Mycenae and Tiryns)
The family tree above shows the descendants of Io, on the Belid branch, which include such heroes as Perseus and Heracles.
The names in blue are the Heraclids or the descendants of Heracles, who would later conquer Argos, Sparta and the region of Messenia.
I should also point out that Apollodorus gave us two versions of the conception of Perseus. The popular version said that Zeus came to Danae as a shower of gold, when she was confined in a bronze chamber. The other version said that her uncle Proëtus was Perseus' real father.
You will find a more complete family tree of Proetus in the House of Argos, Proëtid-Aeolid line. And if you are interested in the early kings of Argos, then you should see Early House of Argos.
You will also find Pelops and his descendants (eg. Atreus, Agamemnon, Orestes, etc) in the House of Pelops.
I have not been able to fit in the large family tree, including the nine sons of Electryon and Anaxo. These nine sons died from the Taphian raid. Only Electryon's illegitimate son Licymnius survived, because he was too young to take part in the battle. I have included an extra family tree below to supplement the above family tree.
By Jimmy Joe