The following excerpt is from "Directory of National Biographies - UK and Ireland Records Collection Update."
It was sent to me from "Ancestor Daily Newsletter."

If any one can add to. . .find discrepancies. . .please let me know.

"Caldwell, Sir Alexander (1763-1839), general, a younger son of William Caldwell (1710-1802) by his third wife, Isabella, daughter of Alexander Clark of Inverness, was born on February 1, 1763. He was a grandson of Sir John Caldwell, second baronet of Castle Caldwell, Co. Fermanagh. Alexander was nominated a cadet in the Bengal artillery in 1782, and on April 3, 1783, after a year's study at Woolwich, was appointed lieutenant fire-worker, and soon after arrived in Calcutta. After some garrison duty there, he was ordered to Dacca in 1787 in command of a brigade of four 6-pounders, but was sent home on sick leave in 1789. He again studied at Woolwich, and after being promoted a lieutenant on November 27, 1790, returned to India in 1791. In 1792, he was made commandant of the artillery at Midnapore; in the following year he was present at the reduction of Pondicherry; from 1794 to 1796, he commanded the artillery at Dinapore and Cawnpore, and on January 7, 1796, he was promoted to captain. In 1798, he was nominated to command the artillery of the force which, under the command of Colonel Hyndman and the superintendence of John Malcom, conquered and disbanded the powerful army trained for the service of the Nizam by M. Raymond.

After this service, he proceeded with the Nizman's contingent, which was placed under the command of Colonel Arthur Wellesley, to take part in the last Mysore War. he commanded the six guns posted on the left at the battle of Malavelly, and also the battery of artillerty which supported Colonel Wellesley in his unsuccessful attack on the great "tope" during the siege of Seringapatam. After the fall of Seringgapatam, Caldwell commanded the artillery and acted as field engineer with the force detached under
Colonel Bowser to take the forts of Gooty and Gurrumcondah, and particulary distinguished himself at the head of the storming party, which took the "pettah" or inner fort of Gooty. He acted in the same double capacity under Colonlel Desse which took Cuptal where he was wounded in the shoulder,received by a special resolution of General Harris, the allowances of both commanding officer of artillery and of field engineer for his service in these two expeditions. In 1800 he returned to Calcutta, and from 1802 to 1806, was aide-de-camp to Major General George Green there, and was employed in instructing the cadets for the Bengal artillery on their arrival from England. (The cadets were no longer permitted to receive their professional education at Woolwich).

In 1806, Caldwell came to England on sick leave; in 1807 was promoted major, and in 1810 returned to Calcutta. In February 1811, he was appointed to command the artillery, consisting of detachments from the Royal, Bengal and Madras artillery, which accompanied the expedition under Sir Samuel Auchmuty to Java, was very instrumental in reduction of Batavia. He was then prostrated with fever, but nevertheless insisted on reporting himself well, and was present at the battle and the storming of the lines of Cornelis on August 26, when his services were especially noticed by General Auchmuty's despatch. He was promoted lieutenant-colonel on March 1, 1812. In July 1812, he commanded the artillery at AGrar in the operations against Zeman Shah, and was thanked in general orders for his conduct. In 1815, he again came to England on sick leave, and on February 3, 1817, was appointed C. B. In 1819, he returned to India for the last time. and in 1821, retired from active service. In 1829, he was promoted colonel, and in 1837, major-general, and in the latter year he was also made a K. C. B.

In 1838, whent he court of directors was asked to nominate three distinguished officers for their army to be made extra G. C. B.'s on the occasion of the coronation of Queen Victoria, Caldwell was one of those selected. He died at his house in Upper Berkeley Street on December 6, 1839.

Sir Alexander was twice married: first ao Ann Miller, who died on October 22, 1836; and secondly. to Elizabeth Shepheard. The second Lady Caldwell, who afterwards married Colonel Le Blanc, died in 1891."

(Stubb's Hist. of the Bengal Artillery; obit. notices in Gent. Mag. and Colburn's United Service. Mag. for February 1840.)

Jerry Gagnon