Individual Details

Documents of the Assembly of the State of New York, vol. 9, compiled 1902; Google Books.
p. 168, New York in Spanish-American War
12th Regiment, Infantry
Assistant Surgeons included
John Brannum Haden, May 2 to Aug 29, 1898
p.241 John B. Haden, age 26, enrolled 2 May 1898 at New York City, to serve two years. Mustered in as 1st Lieutenant and assistant surgeon, May 6, 1898; discharged Aug 29, 1898; Commissioned Captain...(the rest isn't visible)

Annual Report, New York Adjutant's General's Office, 1901; Google Books
p.280 (for the Year 1900 - Report of the National Guard)
Honorably Discharged.
Captains.
John Brannum Haden, Assistant Surgeon, 12th Regiment, March 1, 1900.

1900 Census: Galveston, Ward 9, Galveston, TX, Hh 228
John B. Haden, b. Aug 1871, age 28, married 4 years, b. TX, father b. MS, mother b. LA, physician
Charlotte W., wife, b. Dec 1877, age 22, 2 children, b. TX, father b. SC, mother b. GA
Beatrice S. dau, b. Nov 1897, age 2, b. NY
Catherine, dau, b. Nov 1898, age 1, b. TX
Della Brown, servant, Black, b. Jun 1875, age 24, married 6 years, 1 child, b. TX, cook

One of these daughters would become Sara Haden, actress. An online database gives the older daughter's name as Beatrice Shelton Haden. The second daughter would become the actress Sara Haden - she is buried Old City Cemetery in Galveston. Date of birth on her stone is 17 Nov 1899; died 15 Sep 1981. An online article states that Sara was the second daughter, b. 17 Nov 1898.

Catalogue of the University of Texas, Texas State Printing Office, 1903; Google Books
Department of Medicine
John Brannum Haden, M.D., Lecturer on Ophthalmalogy
University of Pennsylvania, 1892. Licentiate University of New York.
Also listed as Chief of Ophthalmologial Clinic

1930 Census. U.S.Gov. Hospital #78, Hill Twp, Pulaski Co, AR
John B. Haden, age 57, Divorced. Was 26 when married. Born Texas, father b. MS, mother b. TX.
No occupation. Institution.

The Scroll, Phi Delta Theta, Vol. LVI, October 1931
p.118
John Brannum Haden, Sewanee '87- Pennsylvania, '91
Dr. John B. Haden, Sewanee, '87-Pennsylvania, '91, of Galveston, Texas, died July 19, 1931, in the U. S. Veterans' Hospital, North Little Rick, at the age of 60. He was formerly clinical professor of opthalamology at the University of Texas school of medicine and was a veteran of the Spanish-American and World Wars.


Articles from Wikipedia:

Sara Haden (November 17, 1899 - September 15, 1981) was a character actress in Hollywood films of the 1930s through the 1950s.
She was born Sarah Haden on November 17, 1899 (some sources say 1897) in Galveston, Texas. Haden was the daughter of another character actress, Charlotte Walker, who was active in silent films and early talkies. An attractive woman, Haden however lacked the beauty of her mother, as she early on had the appeal of a lonely school marm and thus was always cast in character roles. Haden made her film debut in 1934 (one year after her mother's retirement) in the Katharine Hepburn vehicle Spitfire. Haden later became a MGM contract player in the late 1930s and had smallish roles in many of the studio's films, most notably in the Andy Hardy series starring Mickey Rooney, cast as the spinsterish Aunt Milly Forrest.
Haden made her last film in 1958 but was active on television up until a 1965 guest spot on Dr. Kildare. She was most notable for her stern, humorless characterisations such as a truant officer in Shirley Temple's Captain January (1936), but she also played the much-loved teacher Miss Pipps who is unjustly fired in the Our Gang comedy Come Back, Miss Pipps (1941).
Haden's other films include Poor Little Rich Girl (1936), The Shop Around the Corner (1940), Woman of the Year (1942), and The Bishop's Wife (1947). Her television appearances include episodes of Climax!, Bourbon Street Beat, and Bonanza.
She was married to film actor Richard Abbott from 1921 to 1948. There may have been children.

Charlotte Walker (December 29, 1876 (some sources say 1878) – March 23, 1958) was a Broadway theater actress from Galveston, Texas. She was the mother of character actress Sara Haden
Walker made her stage debut as a teen. At nineteen she performed in London in a comedy called The Mummy. She performed with Richard Mansfield and later returned to her native Texas.
Walker is most noted for her performance as June in Trail of the Lonesome Pine, in 1911. She would later reprise the role in Cecil B. DeMille's 1916 screen version. David Belasco noticed her in On Parole. He signed her for starring roles in plays The Warrens of Virginia, Just A Wife, and Call The Doctor. Each of the Belasco productions was staged prior to World War I.
She continued to act on the Broadway stage. In 1923 she played with Ethel Barrymore in The School For Scandal. It was produced by the Player's Club.
Motion Pictures
Walker's motion picture career began in 1915 with Kindling and Out of the Darkness. Sloth (1917) is a five-reeler which features Walker. In the third reel of this film she plays a youthful Dutch maid who is about sixteen years old. The setting is an old Dutch settlement on Staten Island, New York. The theme stresses the perils of indolence to a nation of people. It cautions against permitting luxury to replace the simplistic life led by America's forebears. In her later silent film work Walker can be seen in The Midnight Girl (1925) starring alongside a pre-Dracula Bela Lugosi. The Midnight Girl is one of Walker's few silents that survives and can be viewed on home video.
As a movie actress Walker continued to perform in films into the early 1930s. Her later screen performances include roles in Lightnin (1930), Millie (1931), Salvation Nell (1931), and Hotel Variety (1933).
Personal life
Walker's first husband was physician Dr. John B. Haden. A daughter Sara Haden was born of this marriage and there may have been other children. After her divorce, she returned to the stage. Her second husband, Eugene Walter, was a playwright who adapted the novel The Trail of the Lonesome Pine for the Broadway stage. The second marriage also ended in divorce in 1930.
Charlotte Walker died in 1958 at a hospital in Kerrville, Texas at age 81. Her daughter Sara Haden became a well known character actress.
References
Janesville Daily Gazette, Monday, October 23, 1916, Page 6.
New York Times, "Charlotte Walker, Actress, Dies at 81; Star on Broadway in World War I Era".

Birth	1872	Texas
Marriage	1896	Charlotte Walker
Death	19 Jul 1931	North Little Rock, Pulaski County, Arkansas

Spouse	Charlotte Walker (1876 - 1958)
Child	Beatrice S. Haden (1897 - 1881)
Child	Katherine "Sara" Haden (1898 - )

Father	Dr. John Miller Haden (1825 - 1892)
Mother	Sarah Best Brannum (1839 - 1888)
Sibling	Elizabeth "Bessie" Haden (1869 - 1884)
Sibling	Dr. Henry C. Haden (1873 - 1956)