SOUDERTON, Pa. – Alfred and Lisa Kettell of Souderton are pleased to announce the engagement of their daughter Anna Allan Kettell to Terence Peters Donahue. Terence is the son of Judy Donahue of Freeport, Maine, and Michael and Ellen Donahue of Belgrade Lakes, Maine. Anna is a 1998 graduate of Souderton Area High School and the University of Maine, Orono, Class of 2002. She is employed as a soil conservationist for the USDA-NRCS in Farmington, Maine. Terence is a regional maintenance coordinator for the Maine Department of Conservation, Bureau of Parks and Lands, and he also attended the University of Maine in Orono. The couple is planning a spring 2011 wedding.