HILLSBORO, Ore. -- Mary Lou Magnuson, 84, of Hillsboro, Ore., formerly of Willmar, died Thursday at her Clare Bridge Memory Care apartment.
Gravesite service will be in Tahoma National Cemetery in Kent, Wash., at a later date.
She was born July 25, 1924, in Willmar to Merle and Louise Hackett.
She married Harold C. Magnuson on June 29, 1942 in Willmar. The family moved to Portland, Ore., in 1956 and to Seattle in 1962.
She was active in genealogy and authored several published papers and books and taught genealogy classes in the Seattle area.
She is survived by her children: Harold C. Magnuson Jr. of Hillsboro, Ore., Lisa Pillie of Issaquah, Wash.; and three grandchildren.
She was preceded in death by her husband in 2006.