In Greek mythology, Isander (Isandrus; also Peisander) is a Lycian prince, son of Bellerophon and Philonoe (daughter of Iobates). Homer says Ares slays him among the Solymi — misfortune balancing his father's earlier victories. Brother of Hippolochus (father of Glaucus) and Laodamia (mother of Sarpedon by Zeus).
Adapted from Wikipedia, "Isander" · CC BY-SA 4.0
I.Son of Bellerophon
After Bellerophon overcomes the Chimera and Iobates' trials, he weds the king's daughter — Philonoe, or in variants Alkimedousa, Anticleia, Pasandra, or Cassandra — and begets Isander, Hippolochus, and Laodamia (also Deidamia or Hippodamia).
Through Hippolochus the Lycian command at Troy descends to Glaucus; through Laodamia, Zeus fathers Sarpedon. Isander is the brother who does not live to send a son to the war.
II.Slain by Ares
Homer's Iliad (Book 6) recalls that Ares killed Isander as he fought the glorious Solymi, while Artemis of the golden reins slew Laodamia in anger — the gods cutting down Bellerophon's children after the hero's own fall from favour.
The atlas id isander-lycian is this Bellerophontid alone. Peisander is sometimes an alternate name for the same figure, not a second Lycian brother in this stemma.