In 1605 Coote was appointed Provost-Marshal of Connaught for life and in 1613 was appointed to the office of General Collector and Receiver of the King's composition money for Connaught, also for life. He was knighted in 1616 by Oliver St John, lord deputy of Ireland.[8]
Before 1617 Coote married Dorothea, younger daughter and coheir of Hugh Cuffe of Cuffe's Wood, County Cork.[9]
Charles and Dorothea had five children, four sons:[10]
When the Irish Uprising of 1641 began, Coote was appointed governor of Dublin and told to raise a regiment. Enraged by Irish Catholic atrocities, such as the Portadown Massacre, against Protestants, Coote and his soldiers retaliated with massacres of Catholics and made no distinction between Gaels and the traditionally Royalist Old English Catholic population of The Pale. Coote then marched south to County Wicklow, and marching north in 1642 defeated the rebels at Swords and Kilsallaghan.[16]
On 10 April 1642, Ormond sent Coote to relieve the beleaguered garrisons at Birr, Burris, and Knocknamease, after which he rejoined Ormond's main force, which defeated the Irish Confederates at the Battle of Kilrush on the 15th. Coote led the decisive cavalry charge.[20] In early May he helped capture the garrisons of Philipstown and Trim, but was killed at Trim on 7May 1642 while leading a sally against an Irish force trying to surprise the town.
Armstrong 2009, 1st paragraph, 2nd sentence. "His mother was almost certainly Nicholas Coote's second wife, Eleanor, daughter of Sir Michael Stanhope and his wife, Anne, and sister of the courtier Sir John Stanhope, who sponsored Charles Coote's early career in Ireland, perhaps from 1600."
Lenihan 2004, p.293. "Coote, Charles, 1st Baronet (d. 1642), soldier and political administrator, was the elder of the two sons of Sir Nicholas Coote and his second wife, Eleanor Stanhope."
G. E. C. 1900, p.226–227. "Coote: cr. 2 April 1621... Sir Charles Coote, Knt., of Castle Cuffe, in Queen's county, 1st s. of Sir Nicholas Coote, of Blownorton, co. Norfolk, by his 1st wife, Anne, da. [daughter] of Thomas Cooper, of Thurgarton, in that county..."
Burke 1883, p.133, right column, line 53. "Sir Charles Coote, removing to Ireland, served in the wars there against O'Neill, Earl of Tyrone, as a captain of 100 foot."
Burke 1883, p.133–134, right column: "Sir Charles Coote m. [married] prior to 1617, Dorothea younger dau. [daughter] and co-heir of Hugh Cuffe, Esq. of Cuffe's Wood, co. Cork..."
Burke 1883, p.134, left column, line 86. "IV. Thomas, of Coote Hill in Cavan; lieut.-col. of the Earl of Ossory's regiment of foot... d.s.p. [predeceased his father] 27 November 1671."
Borlase & Hyde 1680, p.265, line 22. "...when the Marquess did not suspect the poor man in danger, he heard that Sir Charles Coot (who was Provost-Martial General) had taken him out of Prison, and caused him to be put to death..."