William H Dennis, Jr, 79, of Keedysville, MD passed away on April 26, 2021. He was the loving husband of Martha (Boyce) Dennis. Bill was born May 16, 1941 in Baltimore, Maryland to William and Amelia Dennis. The first of his family to attend college, Bill took night classes at Johns Hopkins University while he and Martha raised a family. In 1978 he earned a Doctorate of Science from Johns Hopkins University which he applied to his career as a chemist and physical scientist with various government agencies. A modern-day Renaissance man, he pursued knowledge with a passion, had a wide variety of interests, especially science, art, history, and music. He enjoyed learning about new things every day and delighted in sharing that knowledge with others. Music was an important part of his life and he spent a lot of time both listening to music and playing many instruments, his favorite being the piano. He composed original stories and poems and happily recited these to family and friends. He found peace in planting both vegetables and flowers in his beautiful garden, and kept extensive scientific journals detailing dates, weather conditions, items planted and yield of each plant species. He loved to pick flowers for his wife so they could have color in the house. Everyone who met him said “He’s such a nice man”. In addition to his wife, Bill is survived by his daughter Allison Garman and husband David; son Bill Dennis and wife Cristin; grandchildren Daniel Garman, Lorna Dennis, and Kai Dennis; brother Mark Dennis; sisters-in-law Betty Dennis, Ruth Stephens, Carole Pack, Louise Graff and Ethel Livingston; many favorite nieces, especially Barbara and Mary, nephews and several cousins. He is predeceased by grandson Andy Garman and brothers Earl and Joel Dennis. A celebration of his life will be planned at a future date. In lieu of flowers, please support educational programming by donating to your local public radio or television station through National Public Radio (NPR) or Public Broadcasting Service (PBS).