The Bysse family were prominent in the Dublin legal world in the sixteenth and seventeenth centuries and were also substantial landowners. Their main seat was Brackenstown House near Swords, and they also had a town house at Preston's Inn, on the site of the present-day City Hall. The most notable member of the family was John Bysse (1602?-1680), who became Chief Baron of the Irish Exchequer. Through his daughter Judith most of the Bysse property passed to her son Robert Molesworth, 1st Viscount Molesworth.
A portrait of John Bysse, Chief Baron of the Irish Exchequer was made by James Thornhill.
- Ball, F. Elrington The Judges in Ireland 1221-1921 John Murray London 1926