Question: Who is the paternal grandfather of Connor O'Brien, 2Nd Viscount Clare?

Context paragraphs:
title: Connor O'Brien, 2nd Viscount Clare
paragraph_text: Connor O'Brien, 2nd Viscount Clare (1605–1670) was the son of Daniel O'Brien, 1st Viscount Clare and Lady Catherine FitzGerald, a daughter of Gerald, 14th Earl of Desmond. He married Honora O'Brien, daughter of Daniel O'Brien and Ellen FitzGerald, a daughter of the Knight of Glin, and together they had one son Daniel O'Brien, 3rd Viscount Clare, and a daughter Honora, who married John FitzGerald, 13th Knight of Kerry. O'Brien succeeded to the title Baron Moyarta in 1666.
title: Daniel O'Brien, 3rd Viscount Clare
paragraph_text: Daniel O'Brien, 3rd Viscount Clare was an Irish nobleman, the son of Connor O'Brien, 2nd Viscount Clare and Honora O'Brien. Clare was appointed commander of a newly raised regiment of foot, Clare's Regiment of Foot, an Irish regiment in the Dutch States Army, on 8 August 1674. He was replaced within twelve months by Sir John Fenwick. From July 1751 this regiment was known as the 5th Regiment of Foot. During the War of the Two Kings, Clare served with the Jacobite Irish Army loyal to James II. He was the commander of Clare's Dragoons regiment which he led against William of Orange at the Battle of the Boyne and later exile in France as part of the Flight of the Wild Geese. He married Philadelphia Lennard, sister of the Earl of Sussex, and together they had three children:
title: Daniel O'Brien, 4th Viscount Clare
paragraph_text: Daniel O'Brien, 4th Viscount Clare (died 1693) was the son of Daniel O'Brien, 3rd Viscount Clare
and Philadelphia Lennard. A Jacobite supporter of James II , he served with the Irish Army during the War of the Two Kings. He was commander of a regiment which he conveyed to France where he fought in the Battle of Marsaglia on 4 October 1693 and was mortally wounded. Daniel O'Brien never married and was therefore succeeded by his brother Charles O'Brien, 5th Viscount Clare.
title: Sir Donough O'Brien, 1st Baronet
paragraph_text: Sir Donough O'Brien, 1st Baronet of Leameneh( 1642 – 17 November 1717) was an Irish politician and baronet. He was the son of Connor O'Brien and his wife Maire Rua McMahon. In 1692, O' Brien entered the Irish House of Commons, sitting for Clare until 1714. He married firstly Lucia Hamilton, daughter of Sir George Hamilton and had two sons, Brian O'Brien and Lucius O'Brien. Lucius( who pre-deceased him) was the father of Sir Edward O'Brien, 2nd Baronet. Secondly he married Elizabeth Deane, daughter of Major Joseph Deane and together they had one son named Henry O'Brien. When Murrough O'Brien, 1st Earl of Inchiquin was captured Lady Inchiquin petitioned for her husband's release but Sir Donough O'Brien wrote that he had no mind to see any of his relations" for his being a papist".
title: Henry Krause
paragraph_text: Henry J." Red" Krause, Jr.( August 28, 1913 – February 20, 1987) was an American football offensive lineman in the National Football League for the Brooklyn Dodgers and the Washington Redskins. He played college football at St. Louis University. He is the grandfather of Jennifer Krause He is the great grandfather of Payton Hoeing
title: Donough O'Brien, 2nd Earl of Thomond
paragraph_text: Donough O'Brien, 2nd Earl of Thomond( died 1 April 1553), also known as" the fat", was the son of Connor O'Brien, King of Thomond and Annabell Burke. He inherited the earldom from his uncle, Murrough O'Brien, by special remainder. O'Brien married Helen Butler, daughter of Piers Butler, 8th Earl of Ormonde and Lady Margaret Fitzgerald. He died on 1 April 1553, after being attacked by his brothers at the family seat of Clonroad. O'Brien's brother Donald was named king of Thomond by the Dalgais, but O'Brien's son, Connor, allied himself with the English and regained control of his lands. Children of Donough O'Brien and Helen Butler: O' Brien also fathered an illegitimate daughter, Mary, who married Theobald Burke, son of William Burke, 1st Baron Bourke of Castleconnell.
title: Kaya Alp
paragraph_text: Kaya Alp was, according to Ottoman tradition, the son of Kızıl Buğa and the father of Suleyman Shah, who was, in turn, the grandfather of Ertuğrul, and the great grandfather of the Ottoman Empire founder, Osman I.
title: Daniel O'Brien, 1st Viscount Clare
paragraph_text: Daniel O'Brien, 1st Viscount Clare( 1577? –1663) was an Irish politician and soldier. He was the younger son of Connor O'Brien, 3rd Earl of Thomond and Una O'Brien.
title: Conchobhar mac Toirdhealbaig Ó Briain
paragraph_text: Connor O'Brien, King of Thomond(" fl". 1528 until his death in 1540) was the second to last King of Thomond.
title: Maurice FitzGerald, 14th Knight of Kerry
paragraph_text: Sir Maurice FitzGerald( d.1729), M.P., D.L., 14th Knight of Kerry He was the eldest son of Sir John Fitzgerald, 13th Knight of Kerry and Honora O' Brien, daughter of Connor O'Brien, 2nd Viscount Clare. He lived at Ballinruddery Castle, County Kerry and fought on the Catholic side during the Battle of the Boyne. In 1703, he became the first in his family line to marry a Protestant. His wife was Elizabeth Crosbie, daughter of David Crosbie( d.1717), of Ardfert Abbey, High Sheriff of Co. Kerry, by his wife jane, daughter of William Hamilton of Liscloony, Co. Offaly. Lady Fitzgerald was the sister of Maurice Crosbie( 1689- 1762), 1st Lord Brandon, who was the father of William Crosbie, 1st Earl of Glandore. His marriage, and the subsequent marriages of his children further alienated the Knights of Kerry from the local Catholic populace. Maurice became Deputy Lieutenant of Kerry. He died at Ballinruddery Castle, 9 December 1729. He and his wife were the parents of two sons and nine daughters. Their eldest son, John became the 15th Knight of Kerry, and their youngest son, Robert, became the 17th Knight. Their daughters married into the Herberts( twice), Merediths( twice), Sandes', Creaghs, Stacks, Hewsons, Collis', Rices and Days.

Reasoning steps:
Connor O'Brien, 2nd Viscount Clare father Daniel O'Brien, 1st Viscount Clare
Daniel O'Brien, 1st Viscount Clare father Connor O'Brien, 3rd Earl of Thomond

Answer: spans: Connor O'Brien, 3rd Earl of Thomond