• Married: 21 Apr 1909, St. Augustine's, Neutral Bay, Sydney, N.S.W., Australia ^{1 2}
• Died: Unknown

  Marriage Information:

Frederick married Elsie Maude Martin, daughter of John Alexander Martin and Florence Jane Farnell, on 21 Apr 1909 in St. Augustine's, Neutral Bay, Sydney, N.S.W., Australia ^{1 2}. (Elsie Maude Martin was born in 1885 in Waterloo, Sydney, N.S.W., Australia ³, died in Jan 1927 in Paddington, Sydney, N.S.W., Australia ⁴ and was buried on 29 Jan 1927 in Macquarie Park Cemetery, Macquarie Park, N.S.W., Australia ⁵.)

  Marriage Notes:

" STEPHENSON—MARTIN.—April 21, 1909, at St. Augustine's, Neutral Bay, by the Rev. G. North-Ash, Frederick William, eldest son of William Stephenson of Randwick, to Elsie Maude, younger daughter of the late John Alexander Martin, of Sydney."