This meticulously researched book traces the history of the Landis family in Lancaster County, Pennsylvania, from the era of religious persecution in 17th-century Switzerland to the arrival of the first Swiss settlers in America. It offers a unique glimpse into the lives of Mennonite pioneers, detailing their struggles, migration, and eventual establishment in the Conestoga Valley. The author, drawing on extensive genealogical research, provides detailed family sketches spanning several generations, highlighting significant individuals and their contributions. This book includes an in-depth exploration of the family's ancestral roots, their involvement in the American Revolution, and the growth of Landisville and Landis Valley. Furthermore, it presents a comprehensive record of Landis soldiers who served in the Union Army during the Civil War and offers a valuable resource for anyone interested in local Pennsylvania history, family genealogy, or the experiences of early American settlers.