He obviously inherited Colinton from his wife.

In 1891 his family were:

First name(s) Last name Relationship Marital status  Gender  Age  Birth year Occupation Birth place

John Montray Trotter Head Married Male 48 1843 Lieut Col Bengal Army  (Retired) Midlothian
Mary E E Trotter Wife   Married Female 42 1849  Wife  Italy
Mary E Trotter Daughter Unmarried Female 13 1878  Scholar
Archibald M Trotter Son - Male 12 1879 Scholar -
Gilbert R A J Trotter Son - Male 11 1880 Scholar  Colinton, Midlothian
Margaret M Trotter Daughter - Female 8 1883 Scholar
Alexander L Trotter Son - Male 3 1888 Scholar Colinton, Midlothian,
Agnes Wilds Servant Unmarried Female 50 1841  Governess  England
Robert Billing Servant Unmarried Male 46 1845 Butler Domestic Servant  England
Sarah Billing Servant Married Female 44 1847 Cook Domestic Servant  England
Anne Sinclair Servant Married Female 43 1848 Nurse Domestic Servant  Midlothian, Scotland
Margaret E Hunter Servant Unmarried Female 18  1873  Ladys Maid Domestic Servant Midlothian, Scotland
Rose Budd   Servant Unmarried Female 17 1874 Nursery Maid Dom Ser  England
Isabella Robertson Servant Unmarried Female 32  1859  Housemaid Dom Ser Midlothian, Scotland
Helen Robertson Servant Unmarried Female 19  1872  Housemaid Dom Ser Berwickshire, Scotland
Anne Snedden Servant Unmarried Female 20 1871 Laundry Maid Dom Ser  Bo'Ness, Linlithgowshire (West Lothian), Scotland
Margaret Watson Servant Unmarried Female 18 1873  Laundry Maid Dom Ser Linlithgowshire (West Lothian), Scotland
Helen Laidlaw Servant Unmarried Female 19 1872  Kitchen Maid Dom Ser Glasgow, Lanarkshire, Scotland
Duncan MacLachlan Servant Unmarried Male 15 1876  Page Dom Ser  England
Alexander Sinclair Servant Unmarried Male 15 1876  Page Dom Ser  Shetland Islands, Scotland

Census details
First name(s) John Montray
Last name Trotter
Relationship Head
Marital status Married
Gender Male
Age 48
Birth year 1843
Occupation Lieut Col Bengal Army (Retired)
Birth county Midlothian
Birth county as transcribed MIDLOTHIAN
Birth place Scotland
Birth place other as transcribed SCOTLAND
House name Colinton Mansion House
Street Colinton Road
Parish Colinton
County Midlothian
Registration district Colinton
Archive reference RG12
Record set 1891 England, Wales & Scotland Census
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This biographical outline was found on the British Library Indi Office site:

Name: John Moubray TROTTER
Event type: Biography
Start date:
Start year: 1842
End year: 1924
Biographical notes: Lt-Col, Indian Army; Who was Who II p.1055
Transcribed by: British Library
India Office Records Reference:

Source name: Who was Who II p.1055
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The full Who was Who entry is:

Trotter, Lt-Col John Moubray
(born 6 Sept. 1842, died 15 Feb. 1924)
DL, JP, and Convenor of Midlothian

TROTTER, Lt-Col John Moubray
Born 6 Sept. 1842; 4th s of Archibald Trotter of Dreghorn, Midlothian (d 1844), and Louisa Jane, y d of late James Strange of Madras Civil Service; m 1876, Hon. Mary Catherine Elizabeth (d 1908), o c of Ralph, 2nd Lord Dunfermline, KCB; two s two d ; died 15 Feb. 1924

DL, JP, and Convenor of Midlothian

EDUCATION
Harrow; Addiscombe

CAREER
Served for many years on the Staff of the Army in India

CLUBS
Naval and Military; New, Edinburgh

ADDRESS
Colinton House, Midlothian, Scotland
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On 1 Nov 1924 he matriculated his arms at Lyon Court as:

Argent; a crescent Gules, on a chief indented Azure three mullets pierced of the field -- for Trotter (1st and 4th quarters)

and

Argent; a fess embattled Gules, between in base a chevron indented of the second between three boards’ heads erased Azure, and in chief issuing out of the embattlements of the fess a dexter arm embowed in armour proper, garnished Or, the cubit part of the arm encircled by a wreath of laurel and the hand grasping a French military ‘Invincible Standard’ in bend sinister, a crescent of the second for difference -- for Abercrombie (2nd and 3rd quarters)
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