Having flicked through the thread I'm assuming that we are satisfied we looking at Hugh Jones, Old Station, Port Dinorwic, parents Mary Ann Jones/William O Jones.
On that basis. His father William O Jones was a Chief Engineer of a steamship called 'Clwyd' and perished when she sank after a collision in the Irish Sea in Dec 1917.
See column 3 under Portdinorwic
https://newspapers.library.wales/view/4245756/4245760Here's a welsh language news report of the collision (right hand column), followed by a quick translation
https://newspapers.library.wales/view/4016360/4016364/23/"On Monday the remains of Mr William O Jones, The Station were bought home for burial. He died on a small boat off Douglas, Isle of Man. It appears that his ship was in a collision with another and sank. The crew went into a lifeboat and they were at sea for a while before being rescued. He was about 50 years old and leaves a wife, daughter and three sons to mourn him. He was buried at Llanddeiniolen on Wednesday morning."
See also column 2 under Portdinorwic
https://newspapers.library.wales/view/4244124/4244130/62/jones%20AND%20skerries%20AND%20barrowThere might be more, esp about death of William Owen. Here's the main page
https://newspapers.library.wales/Other snippets I have picked up in a newspaper that is not on the online site:
Hugh JonesPte Hughie Jones, youngest son of Mr and Mrs R Jones, Old Station House, has been lying seriously ill in hospital in Norwich for many weeks. We understand that he is now a little better. (Caernarfon & Denbigh Herald 19/10/1917)
Richard JonesWhilst on a voyage to Australia the steamer Ballarat was torpedoed by a German submarine. Mr Richard Jones, eldest son of Mr and Mrs William O Jones, Old Station was a wireless operator on board the ill fated vessel. We are glad to learn that he is safe. (Caernarfon & Denbigh Herald 11/5/1917)
Ballarat, 11,120grt, defensively-armed, 25 April 1917, 24 miles S by W from Wolf Rock, torpedoed without warning and sunk by submarine
(Website usually indicates if there was a loss of life.)
Following on from the info re death of William Owen Jones. He was buried, aged 47yrs, in the parish churchyard of the adjoining parish namely Llanddeiniolen on Dec 26 1917 (Register is on FindMyPast) Mary Ann Jones is in the register buried 8th March 1922 aged 58yrs. I have both MI books for that churchyard. I cannot see an entry for either under full name or by address.