Victor S. Manley, in his Regional Survey Of Warminster And District, compiled in the 1920s and 1930s, included the following notes about the Halliday family:
Family notes [for the Halliday family] are given in The History of Warminster, page 183.
The house [Yard House at East Street, Warminster] bears on the keystone of the entrance a lion sitting holding a – . [end of sentence left blank]
Mr. J.E. Halliday was a dissenter.
A branch of the family lived near Lynmouth whose house showed the crest of a boar’s head and arms of a cross and crescent.
During the Crusades, William of Scotland joined King Richard with 5,000 men, of whom 1,000 were Hallidays from Annan.
The surname [Halliday] may have been derived from Helidae – children of the sun, i.e. men from the East, who excelled all other men in their knowledge of the stars.