Walker was born near
Russellville in
Logan County, Kentucky. He attended private schools in
Kentucky and
Tennessee and studied law. He moved to Florida in 1837, settling in
Leon County. His father was
David Walker, a prominent early Kentucky politician who served in the
U.S. House of Representatives. David S. Walker was a cousin and close business and political confidante of Florida territorial governor
Richard K. Call. He was also related to Florida Senator
Wilkinson Call, who was Walker's law partner for several years in the 1850s and 1860s in Tallahassee. Walker entered politics as a
Whig and was elected to the first session of the
Florida State Legislature in 1845, serving
Wakulla and Leon Counties as a senator. In 1848, he was elected by Leon County to the
Florida House of Representatives. In 1849, he was appointed Register of Public Lands and was
ex officio State Superintendent of Public Instruction, positions he held until 1854. He advocated and promoted interest in public schools. His efforts resulted in creating public schools in
Tallahassee. He served as Mayor of Tallahassee. He was the
Know Nothing gubernatorial candidate in 1856 but lost to Democrat
Madison S. Perry by 2.6 points. In 1859, he became a
Florida Supreme Court Justice. Walker is also known for establishing Tallahassee's first library in the mid-1800s through his private funds in a time where money was not allocated to libraries outside of urban areas, especially in a "rural" state. ==Governorship==