Goliaths have quite an interest in names and collect them as badges and ranks throughout their lives. Kath Loa Thak for instance also bears the tribal name of "Bold Sawbones" as indicative of his courageous combat medicine and divine castings.
Jerome is a past associate with Renn and coinciding with the transfer of Lantern Light Manor into an orphanage caretaken by Renn's adventuring company, Jerome has enlisted as a member of Renn's adventurers and has moved into the manor.
While raising hell and being a nuisance with Renn in the past, Kath Loa Thak acquired the name Jerome, and was well pleased with its meaning: sacred name. It started innocently enough with one of their pals noticing that Kath'Loa'Thak was not quite a palindrome. The expected paladin-drome jokes followed suit, and for awhile Kath Loa Thak was known in the common tounge as Drome. Drome though, if you try and say it youself for any extended period of time, noticably drops from the tounge like a lead weight and through it's tiresomeness Drome eventually became the more comfortable Jerome.