Leoni Warren Robinson, an architect of New Haven, was born September 30, 1851, in the city where he still resides, his parents being Warren and Sarah Howard (Woodard) Robinson, the former a native of Mansfield, Connecticut, and the latter of Jefferson, New Hampshire.

After attending the Hillhouse high school of New Haven he continued his studies in French's Preparatory School and afterward entered the office of R. G. Hatfield, a well known and prominent architect of New York city, with whom he remained for a number of years, or from 1870 until 1874. He was then in the supervising architect's office in Washington, D. C., until 1877. He traveled abroad in 1877 and 1878 and has since practiced his profession in New Haven. He specializes in public buildings and structural engineering. He was the architect of the public school buildings of New Haven between 1878 and 1894.

From 1903 to 1913 he was a member of the commission to erect the Connecticut State Library and Supreme Court building and during this period was secretary of the commission.

He is a fellow of the American Institute of Architects; past president of the Connecticut chapter of said institute; a member of the Architectural League of New York and of the Connecticut Society of Civil Engineers.

On the 4th of October, 1883, Mr. Robinson was united in marriage to Miss Mina J. De Moss, of Coshocton, Ohio, a daughter of Mr. and Mrs. Louis De Moss. Three children have been born of this marriage: Lois De Moss, who is a graduate of the Hillhouse high school and of Smith College; Mrs. Margaret Osborn, who is a graduate of Hillhouse high school and also of Dana Hall, Wellesley, Massachusetts; and Faith De Moss.

Mr. Robinson is a republican and member of the Young Men's Republican Club. He was a member of the board of education of New Haven for two years and after serving for that length of time, resigned. He belongs to the chamber of commerce and cooperates heartily in its well organized plans for the upbuilding of the city. He is also a member of the Quinnipiac Club and his religious faith is evidenced by his membership in the Congregational church.