With due solemnity (super majus altare) they swore to withdraw their allegiance from the king and to make war upon him, unless within a stated time he restored to them their rightful laws and liberties.
Hartshorne and Dillon have drawn attention to the important part played by the little Ligurian town, Altare, as a centre from which glass-workers migrated to all parts of Europe.
It is said that the glass industry was established at Altare, in the 11th century, by French craftsmen.
Schuermans has, however, discovered the names of more than twenty Italians who found their way into Spain, in some cases by way of Flanders, either from Altare or from Venice.
It is recorded that in the 7th century the abbot of Wearmouth in England obtained artificers in glass from France; and there is a tradition that in the 11th century glass-workers migrated from Normandy and Brittany and set up works at Altare near Genoa.
Schuermans in his researches discovered that during the 15th and 16th centuries many glass-workers left Altare and settled in France, - the Saroldi migrated to Poitou, the Ferri to Provence, the Massari to Lorraine and the Bormioli to Normandy.
Of France established at St Germain en Laye an Italian named Mutio; he was a native of Bologna, but of Altare origin.
Spottiswoode published in 1620 Refutatio libelli de regimine ecclesiae scoticanae, an answer to a tract of Calderwood, who replied in the Vindiciae subjoined to his Altare damascenum, (1623).
During his residence in Holland he published his Altare Damascenum.