She inherits Henry & Sons, encompassing Ireland (7)
I believe the answer is:
heiress
'she inherits' is the definition.
I can't judge whether this definition defines the answer.
'henry sons encompassing ireland' is the wordplay.
'henry' becomes 'H' (symbol for the unit of electrical inductance).
'sons' becomes 'ss' (s is abbreviation for son).
'encompassing' means one lot of letters goes inside another.
'ireland' becomes 'eire' (synonyms).
'h'+'ss'='hss'
'hss' going around 'eire' is 'HEIRESS'.
Can you help me to learn more?
(Other definitions for heiress that I've seen before include "Female will beneficiary" , "Woman with good prospects" , "one who's succeeded" , "Woman likely to succeed?" , "Inheritrix" .)