1.  Marriage Record:

2.  1920 Census Index/Images (online at Ancestry.com, Image #3 of 39):  11 E. Grand Blvd., Detroit (Ward 13), Detroit Twp., Wayne Co., MI, Roll T625_812, p. 62A, SN 2A, SD 145, ED 401, enumerated 5 Jan 1920, official enumeration date 1 Jan 1920 (extracted by Diana Gale Matthiesen):

1920:  for an explanation of the column headings, please see What the Numbers in the Federal Census Mean (missing columns contained no data).
1	2	3	4	5	6	7	9	10	11	12	16	17	18	19	21	23	25	26	27	28
*	11	8	29	Parker Austin G	Husband	R	M	W	27	M		Y	Y	MT	NY	WI	Y	Publicity Manager	Auto Factory	W
				Parker Phyllis	Wife		F	W	20	M	N	Y	Y	MA	MA	MA	Y	None
*E. Grand Boulevard

3.  1930 Census Index/Images (online at Ancestry.com, Image #7 of 13):  Castle Road, Truro, Barnstable Co., MA, Roll T626_883, p. 63A, SN 4A, ED 1-18, SD 16, enumerated 9 Apr 1930, official enumeration date 1 Apr 1930 (extracted by Diana Gale Matthiesen):

1930:  for an explanation of the column headings, please see What the Numbers in the Federal Census Mean (missing columns contained no data).
1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	24	25	26	27	28
*	109	110	110	Duganne Phyllis	Head	O	2000	R	N	F	W	30	D	19	N	Y	MA	MA	MA	Y	Writer	Short Stories	O	Y
				Parker Jane	Dau					F	W	10	S		Y	Y	NY	MT	MA	Y	None
				Duganne Maud	Mother					F	W	64	Wd	31	N	Y	MA	MA	MA	Y	Home	H Maker	?	Y
*Castle Road

Column 2 should be, but in this case cannot be, the street number; this enumerator appears not to have known how to use this column because the numbers run in one incremental series from street to street to street.

4.  SSDI:  Social Security Death Index (online at RootsWeb.com; missing columns contained no data):

Name	Birth	Death	Last Residence	SSN	Issued	Post-em
Phyllis Given	24 Nov 1899	Nov 1976	02666 (Truro, Barnstable, MA)	018-28-7030	MA	Yes
Eben Given	04 Jul 1894	Jul 1980	02666 (Truro, Barnstable, MA	028-40-5175	MA	Yes
Maude Duganne	29 May 1865	Aug 1967	02657 (Provincetown, Barnstable, MA)	028-40-5316	MA	No

Austin PARKER not found (no surprise, he died in 1938 and Social Security was not begun until 1937).

5a.  Anon.  Tuesday, 22 Mar 1938. "Austin Parker is Claimed by Death in California City."  The Helena Independent (Helena, MT), v. 72, n. 353, p. 10 (online at Ancestry.com):

AUSTIN PARKER IS CLAIMED BY DEATH IN CALIFORNIA CITY NOTED AUTHOR; FLYER ONCE EMPLOYED ON INDEPENDENT Austin Parker, 46, noted author and aviator who attended school here and at one time was a news writer for The Independent, died Sunday at Los Angeles, word was received by relatives and friends yesterday. He died in Good Samaritan hospital after suffering a brain hemorrhage. During Mr. Parker's colorful career, he was a top-flight newshawk on New York papers, an aviator for America and France during the World war, and the husband of Hollywood's famous Miriam Hopkins. Gained Distinction In addition to news writing, Mr. Parker gained distinction for his short stories in the Saturday Evening Post and as a dialoguer and author of original plays. Born in Great Falls, Mr. Parker came to Helena as a small child with his parents, the late Mr. and Mrs. Willis F. Parker.  A sister, Mrs. Ted Collins, resides here now. After graduating from the Helena schools, Mr. Parker attended Detroit college and Cornell university.  During summer vacations he wrote news for The Independent. When the World war broke out, Mr. Parker enlisted as an aviator in the LaFayette escadrille, where he won distinction.  Towards the end of the conflict he flew in Italy as a member of the American naval aviation corps.  He also flew for the French in Morocco against the Riffs, winning the rank of lieutenant-colonel.  He was decorated, as a result of his war experiences, with the croix de guerre, the cross of Savoy, and the American naval war corss. Besides his sister here, Mr. Parker is survived by a daughter, Jane Parker of New York city, by his first wife, who was Phyllis Duganne, the short story writer, and by a niece, Helen Collins Brock of Los Angeles, known in the moving picture industry by the state name of Elsa Christian.

5b.  Anon.  Wednesday, 23 Mar 1938.  "Strange Funeral of Austin Parker As He Wished It."  The Helena Independent (Helena, MT), v. 72, n. 354, p. 2 (online at Ancestry.com):

STRANGE FUNERAL OF AUSTIN PARKER AS HE WISHED IT Hollywood, March 22.—(AP)—A strange funeral of "no sadness, no mourning and no ceremony" was held today for Austin Parker. The film writer, who died of a cerebral hemorrhage Sunday at the age of 46, wrote instructions about his funeral five years ago, when he was married to Miriam Hopkins. The Service Miss Hopkins and a group of Parker's friends gathered today in a funeral parlor—"just to sit around and talk about what a swell guy he was." Miss Hopkins, now Mrs. Anton Litvak, stopped long enough before entering the private room to view Parker's silver casket to explain the funeral. "The letter Mr. Parker wrote in which he requested this funeral was only a paragraph long — but it was a beautiful letter," she said. "If you had known him the way we knew him, you would realize he merely wanted his close friends to come and sit around, just as we would in a living room, and talk about what a swell guy he was. "And that is what we are doing." Text Not Revealed Rex Cole, "Parker's business manager, to whom the letter was addressed, said he could not reveal the text of the letter. Parker is survived by a daughter, Jane, 17, who lives in New York, and a sister, Mrs. Ted Collins of Helena, Mont.  He and Miss Hopkins were married in 1928, divorced in 1936 after a five-year separation.

5c.  Anon.  Wednesday, 28 Mar 1938. "Proud of Him." The Helena Independent (Helena, MT), v. 72, n. 354, p. 4 (online at Ancestry.com; boldface added):

PROUD OF HIM Now and then a courageous soul works on a humble newspaper and the staff become very fond of him.  It was with the keenest regret that The Independent recorded the death of Austin Parker, author, flyer and one time the husband of Miriam Hopkins, in its paper Tuesday morning.  Mr. Parker was a gunuine "cub" on The Independent for two summers.  But he was a different kind of a cub.  He was what editors call a "working cub," because nothing was too hard or disagreeable for young Parker to tackle. Parker came to The Independent because his father and sister lived in Helena, and he recognized that training on a small newspaper was the real foundation of a newspaper career.  And he went to work practically for nothing, being promoted rapidly partly because of his ability as a writer and partly because he gave a police commissioner a well deserved beating. His first job was on the New York Times.  As was the custom in those days, a newspaper man had to be fired from a college paper before he could work on a daily.  Austin Parker selected the "Cornell Widow" as the paper from which he chose to be fired.  He got fired amid a sensational journalistic encounter with the faculty.  The New York Times hired him and he made good.  He was a newspaper feature, not a regular newspaper man and he was the author of more than 100 stories appearing in leading American magazines. Austin Parker had served in the World war as a flyer with the French and Italian armies, and at one time was commander of the Escadrille Cheriffienne, the Sulton of Morocco's own escadrille. Mr. Parker very likely received wounds not noticed at the time, which resulted in his death at 46 years.  He was a loveable fellow, which enabled him to select two talented women for wives. Phyllis Duganne, whom he first married, was an author of distinction.  When their romance went wrong, Parker married Miriam Hopkins, talented motion picture actress, from whom he was divorced in 1936. Alone, at the Good Samaritan Hospital in Los Angeles, Austin Parker went on the final great adventure last Sunday, mourned by his sister, niece, and a seventeen-year-old daughter, who makes her home in New York.

6.  The Parker House [link died]:  a New England bed & breakfast in Truro, MA, run by a great-granddaughter of Maude Emma (HAYES) DUGANNE.

7.  Conversation with Jilene COHN, descendant of our subject.