Colonel Wilder, at an early age, took an interest in military affairs. At sixteen he was enrolled in the New Hampshire militia, and at twenty-one he was commissioned adjutant. He organized and equipped the Rindge Light Infantry, and was chosen its captain. At twenty-five five he was elected lieutenant-colonel, and at twenty-six was commissioned as colonel of the Twelfth Regiment.
Soon after his removal to Boston he joined the Ancient and Honorable Artillery Company. In 1856, he was chosen commander of the corps, being the one hundred and fifty-fifth in command. He had four times previously declined nominations. He entered into correspondence with Prince Albert, commander of the Royal Artillery Company of London, founded in 1537, of which this corps, chartered in 1638, is the only offspring. This correspondence established a friendly intercourse between the two companies. In June, 1857, Prince Albert was chosen a special honorary member of our company, and twenty-one years later, in 1878, Colonel Wilder, who then celebrated the fiftieth or golden anniversary of his own membership, nominated the Prince of Wales, the present commander of the London company, as an honorary member. Both were commanders of the Honorable Artillery Company of London when chosen. The late elegantly illustrated history of the London company contains a portrait of Colonel Wilder as he appeared in full uniform on that occasion.
In 1839, he was induced to serve for a single term in the Massachusetts Legislature, as a representative for the town of Dorchester. In 1849, he was elected a member of Governor Briggs's Council, and the year following a member of the senate and its president, and he is the the oldest ex-president of the senate living. In 1860, he was the member for New England of the national committee of the "Constitutional Union Party," and attended, as chairman of the Massachusetts delegation, the national convention in Baltimore, where John Bell and Edward Everett were nominated for President and Vice-President of the United States.
He was initiated in Charity Lodge, No. 18, in Troy, New Hampshire, at the age of twenty-five, exalted to the Royal Arch Chapter, Cheshire No. 4, and knighted in the Boston Encampment. He was deputy grand master of the Grand Lodge of Massachusetts, and was one of the six thousand Masons who signed, December 31, 1831, the celebrated "Declaration of the Freemasons of Boston and Vicinity"; and at the fiftieth anniversary of that event, which was celebrated in Boston two years ago, Mr. Wilder responded for the survivors, six of the signers being present. He has received all the Masonic degrees, including the 33d, or highest and last honor of the fraternity. At the World's Masonic Convention, in 1867, at Paris, he was the only delegate from the United States who spoke at the banquet.
On the seventh of November, 1849, a festival of the Sons of New Hampshire was celebrated in Boston. The Honorable Daniel Webster presided, and Mr. Wilder was the first vice-president. Fifteen hundred sons of the Granite State were present. The association again met on the twenty-ninth of October, 1852, to participate in the obsequies of Mr. Webster at Faneuil Hall. On this occasion the legislature, and other citizens, of New Hampshire were received at the Lowell railway-station, and were addressed by Mr. Wilder in behalf of sons of that State resident in Boston.
The Sons celebrated their second festival, November 2, 1853, at which Mr. Wilder occupied the chair as president, and delivered one of his most eloquent speeches. They assembled again, on June 20, 1861, to receive and welcome a New Hampshire regiment of volunteers, and escort them to the Music Hall, where Mr. Wilder addressed them in a patriotic speech on their departure for the field of battle.
The two hundred and twenty-fifth anniversary of the settlement of Dorchester was celebrated on the Fourth of July, 1855. The oration was by Edward Everett; Mr. Wilder presided, and delivered an able address. On the central tablet of the great pavilion was this inscription: "Marshall P. Wilder, president of the day. Blessed is he that turneth the waste places into a garden, and maketh the wilderness to blossom as a rose."
In January, 1868, he was solicited to take the office of president of the New England Historic Genealogical Society, vacated by the death of Governor Andrew. He was unanimously elected, and is now serving the seventeenth year of his presidency. At every annual meeting he has delivered an appropriate address. In his first address he urged the importance of procuring a suitable building for the society. In 1870, he said: "The time has now arrived when absolute necessity, public sentiment, and personal obligations, demand that this work be done, and done quickly." Feeling himself pledged by this address, he, as chairman of the committee then appointed, devoted three months entirely to the object of soliciting funds, during which time more than forty thousand dollars was generously contributed by friends of the association; and thus the handsome edifice at No. 18 Somerset Street was procured. This building was dedicated to the use of the society, March 18, 1871. He has since obtained donations, amounting to upward of twelve thousand dollars, as a fund for paying the salary of the librarian.
In 1859, he presided at the first public meeting called in Boston, in regard to the collocation of institutions on the Back Bay lands, where the splendid edifices of the Boston Society of Natural History and the Massachusetts Institute of Technology now stand. Of the latter institution he has been a vice-president, and the chairman of its Society of Arts, and a director from the beginning. General Francis A. Walker, the present president of the Institute, bore this testimony to his efforts in its behalf at the in banquet to Mr. Wilder on his eighty-fifth anniversary: "Through all the early efforts to attract the attention of the legislature and the people to the importance of industrial and art education, and through the severe struggles which so painfully tried the courage and the faith even of those who most strongly and ardently believed in the mission of the Institute, as well as through the happier years of fruition, while the efforts put forth in the days of darkness and despondency were bearing their harvest of success and fame, Colonel Wilder was through all one of the most constant of the members of the government in his attendance; one of the most hopeful in his views of the future of the school; ever a wise counsellor and a steadfast ally."
He was one of the twelve representative men appointed to receive the Prince of Wales in 1860, at the banquet given him in Boston, Edward Everett being chairman of the committee; also one of the commissioners in behalf of the Universal Exposition in Paris, 1867, when he was placed at the head of the committee on horticulture and the cultivation and products of the vine, the report of which was published by act of Congress.
In 1869, he made a trip to the South, for the purpose of examining its resources; and in 1870, with a large party, he visited California. The result of Mr. Wilder's observations has been given to the public in a lecture before the Massachusetts State Board of Agriculture, which was repeated before the Boston Mercantile Library Association, Amherst College, the Massachusetts Agricultural College, Dartmouth College, the Horticultural Society, the merchants of Philadelphia, and bodies in other places.
His published speeches and writings now amount to nearly one hundred in number. A list to the year 1873 is printed in the Cyclopaedia of American Literature. Dartmouth College, as a testimonial to his services in science and literature, conferred upon him, in the year 1877, the degree of Doctor of Philosophy.
The Honorable Paul A. Chadbourne, LL.D., late president of Williams College in a recent Memoir of Mr. Wilder remarks: "The interest which Colonel Wilder has always manifested in the progress of education, as well as the value and