Many thanks for your post, the Monte Cassino Cross Numbered: 26786 was awarded to:
Rank: Podporucznik lek. (2nd Lieutenant Doctor)
Christian Name: TADEUSZ ADAM
Date of Birth: 1913
Army Number (also found on His ID Tags): 1913-189-III
Unit: 6 Kompanii Sanitarnej (6th Sanitary Company) 5KDP
In 1939 he Graduated from the Lwow University with a Medical Diploma.
After the end of the War he came and settled in the United Kingdom and in 1953 married Irene Muller in Oundle in Northamptonshire.
In 1960 he applied for British Citizenship whilst living at 64 Carr Head Lane, Bolton-on-Dearne, near Rotherham he was at that time working as a Medical Practioner.
Irene Wiszniowska died in 1983 in London and was followed four years later in 1987 by Tadeusz, whose death was reigistered in Doncaster, Yorkshire.
That is all that I could find out on the Recipient of the Monte Cassino Cross Numbered: 26786, I sincerely hope that it is of some use and help to you.
p.s. I have also given the seller the same information.