Which castle was the stronghold of a family whose surname derived from the Gaelic term "dubh glas" meaning 'black stream'?
Douglas (surname) Douglas (occasionally spelled "Douglass") is a common surname of Scottish origin, thought to derive from the Gaelic "dubh glas", meaning "black stream". There are numerous places in Scotland from which the surname is derived. The surname has developed into the given name "Douglas". "Douglas" is a habitational name, which could be derived from any of the many places so-named. While there are numerous places with this name in Scotland, it is thought, in most cases, to refer to Douglas, South Lanarkshire, the location of Douglas Castle, the chief stronghold of the Lords of Douglas. The Scottish Gaelic form of the given name is "Dùbhghlas"; the Irish language form it is "Dúghlas", and "Dubhghlas", which are pronounced ] . According to George Fraser Black, in southern Argyllshire the surname is an Anglicised form of the surnames "MacLucas", "MacLugash" (which are derived from the Gaelic "Mac Lùcais").
Delaney (surname) Delaney is an Irish surname derived from the Gaelic "Ó Dubhsláine", "Dubh" meaning black and "Slaine" for the River Slaine (Slaney). DeLaney is also of Norman origin. There is a branch of Dulaneys in the United States who trace back to a Thomas Delany. Thomas's son, Daniel, claimed to have been descended from Dr. Gideon Delaune, a Huguenot physician and theologian and founder of the Apothecaries' Hall. Hence, there are multiple discussions among genealogical circles as to the origin of Delaney since it can be anglicized Gaelic or anglicized French.