Caldane, Lord Caineron, loves no one but himself. We don't play for love in my house, only for power. And survival.
– Gorbel, To Ride a Rathorn, "Chapter XIV: To Ride a Rathorn", II
The Caineron are one of the powerful major Kencyr house. They are the wealthiest house and the largest both in terms of Highborn and sworn Kendar; in addition, they maintain a large force of yondri.
The Caineron, like all the houses, received an awful blow at the Battle of the White Hills.Caldane's father, the previous Lord Caineron, was killed there, and Caldane became the next lord. After that, Caldane tried to rebuild their house, by taking in large numbers of yondri.
The Coman have traditionally been very strong allies of the Caineron, with lots of interbreeding between the two houses. However, their new lord, Korey, is less of an ally that previous lords have been, and so this bond is faltering.
They have been rivals of the Knorth since the White Hills, where the at-the-time Lord Caineron was killed in Ganth's folly. His son, Caldane, the next Lord Caineron, has carried anger over that ever since then. This hatred was compacted by what happened with Genjar in the Southern Wastes. The Knorth and Caineron had a brief alliance when Torisen took Kallystine as his consort, but the alliance ended when the contract did, with the Knorth and Caineron on worse terms than ever.
The Caineron and Randir are allies—at least so far in that they are united against the Knorth. It is a "my enemy's enemy" type alliance. Both houses want power, and if the Knorth were out of the way, the Caineron and Randir would surely turn on each other in a heartbeat, as their former ally would then be their greatest threat to power. But with the Knorth in power, the Caineron and Randir unite in working to pull them down—and the question of which of the two of houses would take power next can wait.
↑Seeker's Mask, "Interim VII: Mount Alban" — "One of them carried, drooping, a standard with the device of a serpent devouring its young, gold on black."
↑The Sea of Time, "Chapter XIII: Dreams and Nightmares", VI — "The Kencyr shouted back their defiance, each in the battle cry of his house—[…] the Cainerons’ bellow,"
↑ 3.03.13.23.3Dark of the Moon, "Chapter 4: First Blood" — " 'My father was his father's dupe and paid for it with his life in the White Hills. For that, I destroyed Ganth Gray Lord. My son, my Genjar, died after Urakarn, his name fouled by Knorth lies. For that, I will destroy Ganth's son.' "
↑Bound in Blood, "Chapter X: Noontide Ghosts", II — "Before the White Hills, Bear had been the Caineron war-leader, a great randon."
↑Seeker's Mask, "Part VII: Wilden", IV — "The Caineron was the largest house in the Kencyrath, and Caldane easily the most prolific lord. Aside from his numerous progeny, there must be several hundred Caineron Highborn, not that all lived at Restormir, much less in [the Mound]."
↑Seeker's Mask, "Part III: The Riverland", IX — "Nicknamed yondri-gon or threshold-dwellers, they could serve a house for generations before its master deigned to take them into regular service, especially if that house was the Caineron and its lord Caldane, who deliberately swelled his ranks with the desperate displaced who would do anything to gain his favor."
↑To Ride a Rathorn, "Chapter VII: In the Bear's Den", I — "each house fitting into the pattern, […] gaudy Caineron,"
↑Seeker's Mask, "Part II: Gothregor", III — "She remembered Ganth raving about it in the Haunted Lands keep on those nights when no one slept. The stupid Caineron,"
↑Dark of the Moon, "Chapter 6: The High Council" — " 'you who weren't even born when I took over my house after your father had reduced it to bloody shambles in the White Hills.' "
↑Seeker's Mask, "Part IV: Restormir", V — "Hadn't there been some mystery about Genjar's death afterward? […] Caldane had never forgiven Tori, although for what, exactly, no one seemed to know."
↑Seeker's Mask, "Part I", II — " 'there's already an alliance between the Houses of Knorth and Caineron in that Torisen has taken one of Caldane's daughters as a limited term consort.' "
↑The Gates of Tagmeth, "Chapter VII: All Things Rampant", V — "The Coman were aligned to the Caineron, who in turn were allies of the Randir."