A second generation of Dunbars attended the Manhattan School. A 1924 - 1925 class photo includes Pearl and Emerson Dunbar, as well as other pioneer family members such as John Bissell and Lloyd Dodd.
In 1913, Grant Dunbar built his home at 191st and 1st Ave. SW. Though remodeled, the house was still there as of 1991. Still vigorous in his eighties, Aaron Dunbar helped neighbors clear their land. He died in 1952. Aaron, Hattie, and Roy Dunbar are buried in the Hillgrove Cemetery at 16th Ave. South and South 200th. The land for this one-acre, obscure cemetery was donated by Fred Kindling. It holds many of the area's pioneers.
Manhattan was annexed to Normandy Park in 1983, 94 years after Aaron Dunbar first carved his home from its wilderness. Fern Dunbar Lingwood died in 1974. Her property was located off First Ave. South near SW 176th. Margaret Dunbar, who lived her whole life within a block of the family home, died in 1990. She was a member of the first graduating class of Highline High School. Ella Dunbar Parks, who returned to Normandy Park in the early 1960s and built her home on the lot her father had given her (he gave one to each child), volunteered her time at Highline Community Hospital while in her eighties.