This came up in the thread about LCS, but rather than hijack that one I thought I would start a new thread. There has been much speculation about the proper pronunciation of Ugartechea, so I thought a little research was in order.
The traditional spelling of the name was probably Ugartetxea.
The suffix "etxea", pronounced "a-CHAY-a" means "the house." Basque's are very closely connected to their ancestral houses, and many surnames are derived from these. But even when the surname is different Basques will often introduce themselves with the name of their ancestral house, not their surname, according to a Basque History of the World by Mark Kurlansky. (Below is a famous Basque poem relating the importance of the ancestral house, which gives you an idea why the Basques have never really been successfully conquered.)
As for the first part of the name, the consensus seems to be that in Euskara (Basque) the "u" is pronounced "oo" as in "fOOd." See
http://www.bustovega.com/pronunciacion.htm; see also
http://www.nabasque.org/Astero/A1-8_Basque_spelling.htm.
I have not found any good translation of the root "Ugar" but when similar "uga" words are translated from Basque to Spanish and then Spanish to English, they generally have to do with abundance and multiplication. So, my best guess is that the name means something like house of abundance.
My conclusion: Ugartechea is pronounced "ooh-gar-tah-chay-ah." (There are no accent syllables in Euskara.)
MY FATHER'S HOUSE
Gabriel Aresti, 1963
I shall defend
The house of my father.
Against wolves,
Against drought,
Against usury,
Against the Justice,
I shall defend
The house
of my father.
I shall lose
cattle,
orchards,
and pinewoods;
I shall lose
Interests,
Income,
And dividends,
But I shall defend the house of my father.
They will take away my weapons
And with my hands I shall defend
The house of my father;
They will cut off my hands
And with my arms I shall defend
The house of my father;
They will leave me
Without arms,
Without shoulders,
And without breasts,
And with my soul I shall defend
The house of my father.
I shall die,
My soul will be lost,
My descendence will be lost,
But the house of my father
Will remain
Standing.