Juanita was the oldest of four children: Juanita, Jean, Norma, and Olyn “Corky.” She grew up on the farm in Moorheadville, Pennsylvania, helped with cows, eggs, gardening, and canning, loved reading, attended Harbor Creek High School, and later attended Mercyhurst College in Erie, Pennsylvania.
She married Roger Herman Zierenberg Sr. in Erie in 1942. Roger left for military service soon after. Together they raised six children and built a large family legacy.
Her conversion to The Church of Jesus Christ of Latter-day Saints shaped her belief that family continues beyond this life. Her love of genealogy, temple work, ancestors, and living family became one of the defining parts of her life.