This post by the Garfield National Historic Site compares Queen Victoria and Lucretia Garfield:
In the 1880s two notable women shared a bond that resulted from personal tragedy. One was a Head of State, Queen Victoria of Great Britain; the other was the wife of the Head of State, the American First Lady, Lucretia Garfield. On the surface, their lives did not suggest that the two women had much in common, but a closer look at their early married lives and later actions as widows demonstrates that similar conditions produced similar responses to their roles as the spouses of notable men.
The Queen personally wrote a note to Mrs. Garfield upon the President's death:
The death of President Garfield in 1881 moved the Queen, who never ceased mourning the loss of her own husband. On September 25, 1881, the day before President Garfield’s massive funeral in Cleveland, Queen Victoria wrote a letter to Lucretia Garfield. “I have anxiously watched,” she wrote, “the long, and fear at times, painful sufferings of your valiant husband and shared in the fluctuations between hope and fear, the former of which decreased about two months ago, and greatly to preponderate over the latter- and above all I fell in deeply for you!” As a gesture of her deep sorrow for Mrs. Garfield and the people of the United States, the Queen sent a large wreath of white tuberose to the funeral. The wreath was placed on the President’s casket as his body lay in state in Washington, D.C. and during his funeral in Cleveland.
Lucretia Garfield was so touched by this gesture and the Queen’s handwritten note that she sought to preserve the wreath (along with many other funeral flowers and artifacts) after the funeral. She sent it to Chicago to be preserved using a wax treatment. Today, visitors to James A. Garfield National Historic Site can see the wreath displayed in the Memorial Library vault.