[12] Born in Houston, Texas, Milo was the niece of John W. Abercrombie, U.S. congressman from Alabama, and she was acclaimed by noted portraitist Harrison Fisher as "California's greatest beauty".

[20] In October 1920, von Brincken married for a third time, to Mrs. Ruth McConnell Swartz of Los Angeles, a widow.

The two had met several years earlier, and had recently reconnected after his release from prison, and were married in a small ceremony in Canada.

[21][22] Von Brincken remarried yet again, this time to 21-year-old Bertie Rogers, of Eastman, Georgia, who was an actress in Los Angeles.

[28] While working at the San Francisco consulate, he was arrested at the beginning of World War I on espionage charges, due to his alleged involvement in a bomb plot with his co-conspirators, C.C.

[29] In February 1916, he was indicted, along with dozens of others, including the German consul general and his vice-consul, Franz Bopp and Baron E.H. von Schack, respectively.

[30][31] Von Brincken was convicted and sentenced to serve two years in prison in the Hindu–German Conspiracy Trial for plotting to foment an insurrection against British colonial rule in India, this sentence to run concurrently with a similar conviction for his alleged participation in bomb and dynamiting plots against the government of Canada.

[32] Von Brincken served his two-year sentence at Alcatraz Prison[26][33] and McNeil Island Penitentiary.

[15] Von Brincken made his American film debut acting in The Redemption of David Corson (1914).

[39] With the outbreak of hostilities in Europe in 1939, von Brincken was often cast in the role of a Nazi, such as in 1939's Confessions of a Nazi Spy,[40] the Fay Wray film Navy Secrets (1939),[41] and 1941's So Ends Our Night, which stars Fredric March, Margaret Sullavan, Frances Dee, and Glenn Ford.