The phrase "a hereditary title" is correct and usable in written English.
It can be used when referring to a title or position that is passed down through family lineage, often associated with nobility or aristocracy.
Example: "He inherited a hereditary title from his father, which granted him certain privileges and responsibilities."
Alternatives: "an inherited title" or "a noble title".
He was created a baronet in 1716, becoming the first medical practitioner to receive a hereditary title.
The original said Charlotte Hogg's mother and father both held life peerages; they both hold peerages, but her father's is a hereditary title, not a life peerage.
The threatening invasion of the new nizam (now a hereditary title), Nāṣir Jang, ended with the nizam's murder in December 1750.
Yet Sharif Ali -- sharif is a hereditary title roughly equivalent to lord -- has kept alive the flame of hope he has nurtured since he turned from portfolio management to full-time monarchic ambition after Iraq's invasion of Kuwait in 1990.
Peers who have a hereditary title are eligible to stand in a byelection and only sitting hereditary peers in the same party grouping as the departing peer can vote.
This is a hereditary title and as such is very rarely issued now.
His paternal grandfather, Sayed Amjad Ali Shah, was the nawab of Sardhana in the North-Indian state of Uttar Pradesh, an hereditary title the family had gained thanks to the services an earlier ancestor, Jan-Fishan Khad, had rendered to the British.
It shows, among other things, how strongly the tide has turned against all hereditary titles.
Searching for an exception, I can think only of the exemplary Juan Carlos of Spain, who went heroically out of his way to dismantle the pre-existing relationship between the Bourbons and General Franco, and of King Simeon II of Bulgaria, who in 2001 decided to run for prime minister of his country and, by renouncing his hereditary title, scored a very creditable electoral victory.
Sir Mark Thatcher, the disgraced son of former Prime Minister Baroness Thatcher, should be stripped of his hereditary title, according to an influential cross-party group of MPs.
He has described himself as "an enemy of privilege" and his hereditary title (which still, for some reason, appears on his cheque book) as "hilarious".
