The following data is extracted from Biographies of Croydon, Sullivan County, New Hampshire.
LEANDER HOLBROOK, Son of Peter, and grandson of David Holbrook, was born April 11, 1815. The family came from Upton, Mass. His father, a merchant at the East Village, died in 1822. Owing to a want of proper management in the settlement of his estate, the son was left penniless. At the age of seventeen, he left the farm and prepared for college, defraying his expenses by teaching, after which he studied law. He attended the Law School at Harvard College, Mass. Was admitted to the bar in 1846, and soon after opened an office at Milford, Mass., where he now resides.
Source: Biographies of Croydon, Sullivan County, New Hampshire