Daughter with tool for Sir Francis (5)
I believe the answer is:
drake
'sir francis' is the definition.
(I've seen this in another clue)
'daughter with tool' is the wordplay.
'daughter' becomes 'd' (genealogical abbreviation).
'with' says to put letters next to each other.
'tool' becomes 'rake' (rake is a kind of tool).
'd'+'rake'='DRAKE'
'for' is the link.
(Other definitions for drake that I've seen before include "it's used to fish" , "Elizabethan favourite" , "Sir Francis - -" , "adventurer from Devon" , "Male water-bird" .)