Henry M. Baker (1841-1912) was born in Bow, New Hampshire, and died in Washington, D.C. He was a lawyer, politician, and the son of Mary Baker Eddy's first cousin, Aaron Whittemore Baker. Henry M. Baker graduated from Dartmouth College in 1863 and, in 1866, received a law degree from Columbian University (now George Washington University). After graduation, he was admitted to the bar, Supreme Court of the District of Columbia, and he clerked first in the United States War Department and then in the United States Treasury. In 1882, he was admitted to practice in the Supreme Court of the United States and practised in Washington, D.C., for several years. In 1886, he served as Judge Advocate General of the National Guard of New Hampshire, obtaining the rank of brigadier general. Afterwards, he held a seat in the New Hampshire State Senate (1891-1892) and was elected to the United States House of Representatives (1893-1897). After losing his Congressional seat, he practiced law, splitting his time between Washington, D.C., and Bow, New Hampshire. In 1905, he was elected to the New Hampshire House of Representatives, serving until 1909. Over the years he acted as Mary Baker Eddy's lawyer and legal advisor. In 1907, he was appointed by Eddy as one of the three trustees under the trust she created to handle her finances.

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