Hi James, In 1920 the Holmes family and Albert were living in Portland, Multnomah, OR.
Albert's sister Florence had married Wafeford F. Holmes. They had a daughter Mabelle F., b. OR, 22 and a son Wakeford G. b. OR, 20.
In 1930 Wakeford Sr., his wife Florence and son Wakeford G. were living in Portland.
Wakeford G. [father] died 16 Nov 1976, Multnomah Co. per Oregon Death Index. His obituary should list his survivors but you'll have to look them up in the Oregon Death Index to be sure they're still alive.
Wakeford G.'s wife, Florence, died 31 March 1956, Multnomah Co, Spouse-Wakeford, death cert #3630. This obituary is probably too old to be of much help.
Their daughter Mabelle F. Holmes was b. Abt. 1898, probably Multnomah Co. She married 24 Dec 1920, Multnomah Co. Source: Oregon Marriage Indexes 1906-2008.
They don't list the groom so you'll need to order a copy of that marriage certificate. I'd contact the Oregon State Library.
Wakeford G. Holmes died 5 Aug 1955, Multnomah Co., Spouse-Florence, Death Cert #9596. Source: Oregon Death Index.
I tried to find more info about his spouse but I ran in to too many Florence Wakeford's. I laud your effort to get these pictures back to another side of your family. If you're looking for more info about the entire family, I can send you what I found. Successful Searching!