One of the longest testimonies was that of George Thompson Ruby.
Ruby was a Northern sympathizer and newspaper correspondent that moved south during the war to teach.

He was later an agent for the freedmen's Bureau, newspaper editor, Union League activist, Texas Delegate to the National Republican Convention (1868), Delegate to the Texas State Constitutional Convention (1868-1869), Texas State Senator, Louisiana Civil Servant and Congressional witness. Only some of his history is embedded in the files of the Senate. Other important details were not revealed due to the 'court room' style question and answer format of the hearings in general.

Testimony of George T. Ruby (col) on Wednesday, March 10, 1880
[BIO Synopsis, in response to questioning]

1. Born in New York in 1841. Went to the south during the war as a teacher 'of own volition'- in New Orleans. He taught at Fort Douglas School in New Orleans and was an agent with the Freedmen's Bureau in East Feliciana Parish from the end of 1865 (or beginning of 1866) until July 1866.

2. Resident of New Orleans and Journalist for the New Orleans Observer. Lived in New Orleans for 16 years, on and off and in Texas a part of that time (approx. 8 years)

3. Once was editor of Mr. Pinchback's paper in Louisiana.
Past correspondent of Mr. Wm Lloyd Garrison's paper - Anti-Slavery Stand. The paper became the property of Mr. Powell, who is associated with Mr. Wendell Phillips. Also past correspondent of the New York Tribune - when Mr. Greenly was editor. Occasional correspondent of the New York Times and the Toledo Blade. In Texas, was editor and proprietor of the Galveston Standard, a Republican paper.

George T. Ruby Picture (Early Texas Senator)
http://tinyurl.com/3ryor

- 1840 Census -
New Gloucester, Cumberland, ME
Ebenezer Ruby

- 1850 Census -
New Gloucester, Cumberland, ME
Eben Ruby 34 M Mu farmer 500
Margarite A. " 11 F Mu
Arthur T. " 5 M Mu

Portland, Ward 2, Cumberland, ME
Reuben Ruby 53 M Mu Trader Maine
Rachel " 40 F Mu Mass
Frederic B. 19 M Mu Waiter Maine
William 17 M Mu Clerk Maine
George T. 11 M Mu New York
Horatio F. 7 M Mu "

- 1860 Census -
New Gloucester, Cumberland, ME
Eben Ruby 44 B M M.P. Clergyman
Jemima 47 F B
Arthur T. 15 M B Farm Laborer
Margrett 63 F B

Yarmouth, Cumberland, ME
Aaron Freeman 29 M Mu Mariner PA
Janette C 28 F Mu ME
Emery P. 4 M Mu ME
Isabella Carter 11 F Mu ME
Rachel Ruby 50 F B MA

Bangor, Ward 1, Penobscot, ME
William W. Ruby 25 M Mu Baker ME
Madline 19 F Mu ME
George T. Ruby 19 M Mu Confectionary NY
Emma Talbot 13 F Mu ME

- 1870 Census -
Auburn, Androscoggin, ME [Danville PO]
Eben Ruby 53 M B Farmer ME
Jermima 56 F B Keeping House
Arthur T. 25 M B Farmer ME
Sarah E. 24 F B Keeping House

- 1880 Census -
Orleans Parish, LA [Napoleon Avenue]
Ruby, George W. Mu 39 Boarder Clerk in Custom House NY NY NY
----, Lucy V. Mu 29 Boarder VA VA VA
----, Mabel Mu 8 TX NY VA
----, George Mu 5 DC NY VA
----, Victor 7 Mu 1 LA NY VA
Living with Fayerweather, George Mu 38 Journalist
and wife Angelina A.

- 1900 Census -
District of Columbia
Ruby, Lucy V. Hd B F July 1852 47 Wd 3 3 VA VA VA Clerk-Gov't
----, Mabel Dau B F Sept 1871 S TX NY VA Teacher

Unfortunately, George T. Ruby died in New Orleans of Malaria just a couple of years after his Senate testimony.

New Orleans, LA Death Records
George Thompson Ruby
D. 31 Oct 1882