Af ter the 4th century other names or expressions come into use, such as mensa tremenda, sedes corporis et sanguinis Christi.
The statements made in the New Testament about St Peter were applied without hesitation to all the popes, considered as his successors, the inheritors of his see (Petri sedes) and of all his prerogatives.
In the West the principle, " prima sedes a nemine judicatur," was always recognized and applied.
When he took the kingly title in 1130 it became "Prima sedes, corona regis, et regni caput."
What is a house but a sedes, a seat?--better if a country seat.