The following obituary appeared in the Richmond [VA] Daily Examiner, 27 Oct 1864, p. 2, c. 1:

"Died, October 20, at ten o'clock P.M., of wounds received in the late battle of October 7, 1864, on the Darbytown road, near Richmond, First Lieutenant ROBERT R. ARMSTRONG, Co L, First regiment, Texas volunteers, a native of Newcastleton, Roxburghshire, Scotland, aged about twenty-eight years. Among the gallant and noble who fell in the above battle was Lieutenant Armstrong, a universal favorite and loved by all who knew him; respected and admired for the many noble qualities he possessed as a soldier, a patriot and a christian. He entered the service of the Confederate States before the second battle was fought, and up to the time of his death he had participated in all the engagements that the Texas brigade had been called upon to take a part. He was severely wounded in the battles of Chickamauga and that of the Wilderness. Lieutenant Armstrong had not a relative to witness or comfort him in his late long suffering and death. Thrown among strangers and in a strange land, he leaves a fond mother and two lovely sisters to mourn his loss. May they be comforted in their bereavement. The fulfillment of duty was his only study - to God, to man and his adopted country. In his death many friends lost a staunch and valuable companion, and society is forever deprived of one of its greatest ornaments of virtue, manhood and industry. As an officer he was dearly loved by his men, and won the highest admiration of his superiors in rank.

R."