Cardiff Coroner's Court says it has been made aware of the death of a one-month-old baby but an inquest has not yet been opened.
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Blackwood mother Trudy Jones was on holiday when she was gunned down in the Tunisian beach massacre that claimed the lives of 30 Britons.
The pair, including a man in his 50s, were struck around midday on the Pen y Fan mountain range in Powys, mid-Wales.
The former Wales international and convicted rapist Ched Evans is expecting a baby with his fiancee, Natasha Massey.