Well, if that is what Robert Foster's
Guide to Middle-earth says, he's got it wrong, or rather backwards.
Quote:
And Aragorn hearing him, turned and said: 'Verily, for in the high tongue of old I am Elessar, the Elfstone, and the Renewer': and he lifted from his breast the green stone that lay there, 'But Strider shall be the name of my house, if that ever be established. In the high tongue it will not sound so ill, and Telcontar I will be and all the heirs of my body.' -- from ROTK, Book V, Chapter 8 entitled 'The Houses of Healing'. (The bold is mine to highlight the pertinent part of JRRT's text)
Therefore, the Telcontari were the family of the House of Telcontar (Strider), similar to the Tudors were the family of the House of Tudor and the Plantagenets were the family of the House of Plantagenet, these latter two having been but two of the ruling families in the history of England.

Tommie gets the Pseudo-Silmaril because she had the right words.

Robert Foster gets a pan because he missed the point, or did I just read him wrong?
What was the main criticism in Edwin Muir's review of The Lord of the Rings, entitled 'A Boy's World'