Elwë Singollo
From Tolkien Gateway
Elwë Þindicollo (Q, pron. [ˈelwe ˌθindiˈkolːo]) or Sindicollo (pron. [ˌsindiˈkolːo]) was the ancient name of King Thingol; when he settled in Doriath with Melian, he took the Sindarin form of his name, Elu Thingol.
The Noldor called his surname Singollo (pron. [siŋˈɡolːo]) in Quenya.
Etymology
The name means "star-man" and contains el and -we.