Peleus
Πηλεύς
The only mortal to take a sea goddess as his wife.
He held on to Thetis as she shifted through form after form trying to escape, and so won her as his wife.
At their wedding, the uninvited Eris threw the golden apple — and from that, the Trojan War began.
He outlived his son Achilles, remaining a father who buried his own child.
SourcesApollodorus, Library