Two characters mixed up
There were two dwarves named Glóin, but the articles Glóin and Glóin, King of Durin's Folk mix them up. The first lived TA 2136–TA 2385, and was son of Thorin I. The second lived TA 2783–FA 15, was son of Gróin and father of Gimli, and he accompanied Bilbo. I think we should create a disambiguation page for them.
I have to agree and they both sound like the same person.