I'm not connected to the family but the obituaries should help:
Seattle Daily Times 13 Sept 1973 Page D22 Deaths and Funerals Tonkin, James Of Black Diamond. Beloved husband of Marie. Father of Karen Busby, Seattle; Barbara Hougardy, Black Diamond; Sharon Coffield, Renton; Stepfather of Harris Lawrence, Hawaii; Jacqueline Fanning, Okanogan. Six grandchildren. Member of Black Diamond Eagles and Pythian Lodge. Services Friday, 1 p.m. Stokes Mortuary, Renton. Interment, Greenwood. Remembrances to Children's Orthopedic Hospital.
Seattle Daily Times 29 December 1953 Page 26
Mrs. James W. Tonkin Rosary for Mrs. Frances Jeanette Bolden Tonkin, 43, of Black Diamond, will be said at 8 o'clock tonight in Stokes chapel, Renton.
Requiem Mass will be said at 10 o'clock tomorrow in St Barbara's Church, Black Diamond. Burial will be in Greenwood, Cemetery, Renton.
Mrs. Tonkin, wife of James W Tonkin, owner of the Tonkin Logging & Hauling Co., died Sunday at her home after a long illness. She had lived at Black Diamond since 1926.
Mrs. Tonkin was born in Crested Butte, Colo.
Surviving besides the husband are three daughters, Mrs. Barbara Sawyer, Seattle, and Karen Joan and Sharon Jean Tonkin at home; her mother and stepfather, Mr and Mrs Jerry Milautz, Black Diamond, and three sisters, Mrs. Mary Grgurich and Mrs. Ann Steiert, both of Black Diamond, and Mrs. Agnes Johnson, Seattle.