Question: Who died earlier, Thomas Sadler Roberts or Margaret Buechner?
Sentence (from "Thomas Sadler Roberts"): Thomas Sadler Roberts (February 16, 1858 - April 19, 1946) was an American physician known for his work in ornithology, bird conservation and for his book "The Birds of Minnesota" (1932), a comprehensive account on the birds of the Minnesota area.
Relevant evidence: Yes