Richard L. Schreiner, 43, a certified public accountant and president of the Schreiner-Legge Co., a Northern Virginia accounting concern, which he founded about 1973, died of cancer Sept. 19 at his home in Alexandria.

Before founding Schreiner-Legge, which has offices in Alexandria and Springfield, he had worked for about six years for the General Services Administration and the Internal Revenue Service.

He was a past president of the Mount Vernon Kiwanis Club and was a member of St. John's Lutheran Church in Alexandria. Mr. Schreiner was a native of Alexandria. He was a graduate of Mount Vernon High School and Shepherd College in West Virginia.

Survivors include his wife Cathy and two sons, Christopher and Todd, and his parents, Alvin and Hazel Schreiner, all of Alexandria, and two sisters, Betty Gunter of Dale City, Va., and Nancy Schneider of Rockville.

STEPHEN WADDELL WELTON,

32, a former area McDonald's manager and audiologist who participated in volunteer activities, died Sept. 18 at the Veterans Administration Hospital here. He had acquired immune deficiency syndrome (AIDS).

From 1980 to 1982, he was a manager with McDonald's restaurants here. From 1982 to 1983, he worked for hearing aid businesses in suburban Maryland. He left Washington in 1983 and worked in California before returning here in 1986. During that year, he briefly worked for the Free State Hearing Aid Center in Laurel.

Mr. Welton had been an advance man in Mayor Marion Barry's 1982 reelection drive. He did advance work for a tour by the mayor of the city's black gay bars.

He also had served as master of ceremonies for Christmas parties for children ill with sickle cell anemia. For this work, he received awards from Howard University and the United Black Fund.

Mr. Welton was a native of Cleveland and served in the Army in the early 1970s. He received his certification in audiology at the New York City Technical College before moving here in 1979.

Survivors include his mother, Marie Welton of Cleveland.

HELEN DOERR RISTOW,

70, a former teacher with the Langley School in McLean who also gave private piano lessons, died of respiratory failure Sept. 18 at her home in McLean.

Mrs. Ristow was born in Chicago and graduated from Rockford College in Illinois. She moved to the Washington area about 1948. During the late 1950s and the early 1960s, she taught at Langley. She later gave private music lessons before retiring in 1982.

Survivors include her husband, Walter W. Ristow of McLean; three sons, W. Richard Ristow of Providence, R.I., William W. Ristow of Bainbridge Island, Wash., and Stephen F. Ristow of Falls Church; her mother, Della G. Doerr of Racine, Wis.; one sister, Nancy Scott Gage of Kenosha, Wis.; one brother, Richard Lyman Doerr of Orange, Conn., and three grandchildren.

SAMUEL FARKAS,

72, a retired wholesale jewelry salesman who had lived in the Washington area since 1963, died of cancer Sept. 20 at Holy Cross Hospital. He lived in Silver Spring.

He spent more than 35 years as a jewelry salesman before retiring in 1983 from the Albert Wahl jewelry concern. Mr. Farkas was a native of New York City and served in the Navy during World War II.

He was member of the Masons, Almas Temple, Knights of Pythias, B'nai B'rith, and the Jewelers Benevolent Association.

Survivors include his wife, the former Renee Senft, whom he married in 1946, and a son, Richard E., both of Silver Spring; a daughter, Joan Cohen of Cherry Hill, N.J.; a brother, William, of Lauderdale Lakes, Fla.; two sisters, Rose Farkas of Petaluma, Calif., and Clara Tabawitz of Los Angeles, and two grandchildren.