Mr Frank Couch was born in Port Isaac, Cornwall, England on 11 August 1884.

He was the son of Francis Couch (b. 1853), a mariner, and Hannah Marina Fishley (b. 1853), both natives of Port Isaac who had married in Plymouth on 6 August 1874, settling in that city where they began their family before returning to their native Port Isaac in the early 1880s.

Frank had eight known siblings: Charles Olonzo (1876-1905), Laura Ellen (1878-1943, later Mrs John Avery), Francis (1879-1880), Annie (b. 1882), Ralph (1888-1968), Rebecca (b. 1890), Mary (1891-1893) and Marina (1894-1960, later Mrs George Bott).

He first appears on the 1891 census, then a resident of an unspecified address in Port Isaac and the family home would still have an unspecified address by the time of the following census in 1901. At the time of the latter record, however, Frank was absent from the family home and listed elsewhere as a crewmember (a cook) aboard Deveron, a schooner on which his brother Charles was the master. Exactly when Frank had joined the Royal Navy is not entirely certain and how he switched from hospitality to seamanship is likewise a mystery. His brother Charles, also a seaman, had been lost at sea in November 1905.

Frank's mother died on 5 April 1910 and his father was shown on the 1911 census living at Canadian Terrace in Port Isaac. Frank was shown on the same census as an unmarried merchant seaman boarding at 1 Birmingham Street, Southampton.

He signed-on the Titanic in Southampton on 6 April 1912 and as an able-bodied seaman his monthly wages were £5. He gave no local address but indicated that he had previously served aboard the Modwera.

Frank Couch was lost in the sinking and his body was later recovered by the MacKay Bennett (#253).