Zoe, there’s an imuseum photo of a Dr Greg MacGregor (John William MacGregor from Frances’s message re his burial). I wonder whether it’s the same photo you mention.

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Link to website:

www.imuseum.im/search/archive_record/view?id=mnh-museum-496117&type=archive&tab=all&from=0&term=macgregor+warburton&size=20&sort=&filter=&view=&images=&ttmgp=0&rfname=&rlname=&machine=&race=&raceyear=&linked=0&pos=1

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Is this the same person ?

1891
322 Netherfield Road North, Everton

Ancestry’s transcription:

Name: John Macgregor
Gender: Male
Age: 58
Relationship: Head
Birth Year: 1833
Birth Place: Scotland
Civil Parish: Everton
Residence Place: Everton, Everton, Lancashire , England
Sub registration district: North Everton
ED, Institution or Vessel: 9
Neighbors: View others on page
View others on page
Piece: 2953
Folio: 20
Household Members: Name Age
John Macgregor 58
Mary Reed 50

notes:
JM 58 unmarried, physician regd practitioner b Scotland
MR 50 servant b Liverpool

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Jean C