Re your request, I suggest that you might like to investigate/confirm the following.
There was also a seemingly associated Lady Dora MILNE. She was born about 1885 and so could have been the first wife of Charles, his unmarried sister, or sister-in-law. She travelled to Egypt in 1908.
CHARLES FERGUSON MILNE was born Abt. 1885. He married JANET GLEN Bet. 1911 - 1915 in Cairo. She was born Abt. 1885, and died in L'pool 1978.
More About CHARLES FERGUSON MILNE:
Occupation: Gov't official
Residence: 1923, 18 Drumoyne (Str.), Govan, Glasgow
Children of CHARLES MILNE and JANET GLEN are:
i. GEORGE GLEN CARNEGIE3 MILNE, b. 12 Feb 1921, British Consular Births 1921-25, volume 15 page 245, Cairo; d. 13 Dec 1993, Shoreham by Sea, Worthing, W. Sussex; m. (1) MARY A. DAVIES OR ELPIS MAVRIDOGBA, Bet. 1941 - 1945, Alexandria, Egypt; m. (2) DORA PATRICIA CARDEW PHILBY, 1950, Fulham (1q); b. 07 Nov 1921; d. 13 Aug 1976, Wandsworth (3q).
Notes for GEORGE GLEN CARNEGIE MILNE:
There is a George G C Milne listed in the British Consular Births 1921-25, volume 15 page 245, Cairo
More About GEORGE GLEN CARNEGIE MILNE:
26 Jul 1935, Dep London for Port Said
22 Jul 1938, Dep London for Port Said
22 Sep 1933, Arr London from Brisbane?
Probate: 27 Jan 1994, <£125,000
Residence: 1993, 28 Overhead, Shoreham by Sea, W. Sussex
Notes for DORA PATRICIA CARDEW PHILBY:
Marriages Mar 1950
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Milne, George G C, Philby, Fulham, 5c1142
Philby, Dora P C, Milne, Fulham, 5c1142
Philby, Patricia, Milne, Fulham, 5c1142
More About DORA PATRICIA CARDEW PHILBY:
Emigration: 20 Jul 1938, By "Cathay" for permanent residence in Egypt.w sister & Milnes
Immigration: 1948, Canada to England - as Milne?
Probate: 11 Nov 1976, £8,981 - no recipient given
Residence: 1976, Fremantle Hotel, West Cromwell Rd., SW5
ii. MARGARET FRASER MILNE, b. 1921, Cairo; d. 1991, USA; m. KENNETH MORGAN, 1941, Cairo. (Thought to have had several children.)
iii. LORNA C. MILNE, b. 1925, Army Births, Cairo 1925 page 513..