I previously shared that my mother remembers walking (quite a distance) to visit her grandmother Marguerite when she was growing up outside of Pittsburgh. She was supposedly her grandmother's favorite grandchild and even spent three months living with her when she was eight years old and recovering from (possibly) rheumatic fever, which left her with a lifetime heart murmur.
My great-grandmother, Marguerite (Lysle) Hunter, was the first ancestor I found in the 1950 census when it became available on April 1 at the National Archives website. No, I didn't find her by searching for Marguerite Hunter (a relatively common first name combined with a very common surname in Allegheny County, Pennsylvania). I searched for her divorced daughter, Mary Gerken.
1950 U.S. census, Allegheny County, Pennsylvania, Hampton Township, ED 2-366, sheet 7, lines 17-19, household 55 (Marguerite Hunter & daughters); U.S. National Archives, 1950 Census (https://1950census.archives.gov/search/).