First doctor in old Florentine house? (6)
I believe the answer is:
medici
'florentine house?' is the definition.
'medici' can be an answer for 'house?' (I've seen this before). I'm unsure of the 'florentine' bit.
'first doctor in old' is the wordplay.
'first' means one lot of letters go next to another.
'doctor' becomes 'medic' (doctor is a type of medic).
'in old' becomes 'i' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'medic' put next to 'i' is 'MEDICI'.
Can you help me to learn more?
(Other definitions for medici that I've seen before include "Name of great Florentine family 15-17th centuries" , "Noted Florentine family" , "Name of leading family of renaissance Italy" , "Well-known European family" , "Noble Florentine family" .)