The Bysse family were prominent in the Dublin legal world in the seventeenth century and were substantial landowners; their main seat was Brackenstown House near Swords

Swords

A sword is a cutting/thrusting weapon made of metal. Sword or swords may also refer to:* Swords, County Dublin, Ireland* Suit of swords, a suit in Latin-suited playing cards and Tarot decks* SWORDS, a ground-based military robot...

 and they had a town house at Preston's Inn, the site of the present City Hall. The most notable member of the family was John Bysse

John Bysse

John Bysse was a member of the Parliament of Ireland during the 1630s and 1640s, was excluded from office during the Interregnum and was one of the leading Irish judges after the restoration of the monarchy.-Biography:...

 ( 1602?-1680 ) who became Chief Baron of the Irish Exchequer. Through his daughter Judith most of the Bysse property passed to Robert Molesworth, 1st Viscount Molesworth

Robert Molesworth, 1st Viscount Molesworth

Robert Molesworth, 1st Viscount Molesworth PC came of an old Northamptonshire family. He married Letitia Coote, daughter of Richard Coote, 1st Lord Coote of Coloony and Mary St. George.His father Robert Robert Molesworth, 1st Viscount Molesworth PC (7 September 1656 – 22 May 1725) came of an old...