She was a 1972 cum laude biology graduate of Bryn Mawr College. A recipient of a DuPont Fellowship, she went on to receive a master's degree in biochemistry from the University of Pennsylvania.
She was a 1981 graduate of the University of Maryland medical school in Baltimore, where she was elected to the Alpha Omega Alpha medical honor society and received the Merck Manual Award for outstanding achievement in medicine.
After completing early residencies in North Carolina, she moved to the Washington area in 1985 to finish her hematology and oncology fellowship at George Washington University Hospital.
She was on the staff of Suburban and Holy Cross hospitals and had clinical faculty appointments at George Washington University medical school and the Veterans Administration Medical Center in Washington.
Dr. Kirwin wrote or contributed to peer reviewed scientific papers on membrane biochemistry and disorders of blood coagulation as well as a textbook chapter on blood coagulation and hemostasis.
She was a member of Bradley Hills Presbyterian Church in Bethesda.
She was fluent in German and American Sign Language. Her avocations included reading science fiction and completing the Sunday crossword puzzle.
Survivors include her husband of 25 years, Dr. John Hsiao, and a daughter, Katie Hsiao, both of Potomac; her mother, Margaret Kirwin of Silver Spring; a sister, Liza Kirwin Bisese of College Park; and a brother, Thomas Kirwin of Baltimore.
Alison MacDonald Doherty Environmental Geologist
Alison MacDonald Doherty, 46, an environmental geologist specializing in hazardous and toxic materials, died of liver and kidney failure March 20 at Montgomery Village Health Care Center. She lived in Germantown.
Mrs. Doherty, who was born in Baltimore, graduated in 1980 from James Madison University. She held positions as a hydrogeologist with Roy F. Weston Inc. of West Chester, Pa., from 1980 to 1983 and with Reynolds Metals Co. in Richmond in the mid-1980s.
She was a senior risk assessor for Versar Inc. of Springfield in the early 1990s. From 1999 to 2002, when she retired for medical reasons, she was an environmental geologist for Potomac-Hudson Engineering Inc. in Bethesda.
She had held civilian positions with the Army and was a contract employee with an Environmental Protection Agency technical assistance team that responded to hazardous and toxic chemical spills.
She was a member of the American Geological Society and the National Speleological Society. She was also a member of Boyds Presbyterian Church.
Survivors include her husband of 20 years, Army Reserve Col. Michael C. Doherty of Germantown; a daughter, Catherine Doherty of Germantown; her parents, Donald and Betty MacDonald of Jacksonville, Md.; and a brother, David MacDonald of Jacksonville.
William De Forest Ball Jr. Coast Guard Commander
William De Forest Ball Jr., 83, a retired Coast Guard commander who was a naval architect and marine engineer, died of end stage renal failure and end stage cardiomyopathy March 18 at Casey House in Rockville. He had lived in Potomac since 1971.
After retiring from active duty in 1965, Cmdr. Ball was a naval architect for General Dynamics Corp., E.G. Frankel of MIT and at Coast Guard headquarters in Washington. He also was a marine accident investigator for the National Transportation Safety Board until he retired for a second time in 1988.