Name of the Gladden River (UT/280), a combination of sîr “river” and ninglor “golden water-flower”, also seen in Loeg Ningloron “Gladden Fields, (lit.) Pools of the Golden Water-flowers” (S/295; SI/Gladden Fields, Loeg Ningloron). The name Sîr Ninglor appears to be Sindarin, but could also be Nandorin like the related name Loeg Ningloron.

Conceptual Development: In Lord of the Rings drafts from the 1940s, this river was first named as N. Palathrin “Gladden” (RS/432).

Earliest Elvish name for the river Gladden appearing in Lord of the Rings drafts from the 1940s (RS/432), a combination of palath² “iris” and the adjective suffix -rin, as suggested by Roman Rausch (EE/1.15).