I also only just discovered that the Fleetwing was listed at the beginning of this tread by Nick90. 
Fleetwing: reg. at Wexford 1902. Built at Banff in 1874. 78 ton, 2 mast schooner of 85 feet. Owner: J.J. Stafford, merchant and ship owner. Wrecked Carnarvon Bay 1919.
Left Wexford: 17 Dec 1918
Wrecked: 20 Jan 1919
The other part is that I have Caernarfon Bay not Carnarvon Bay.
The Wexford Mariners I have were Captain George Murphy (The Faythe), Tim Murphy (Hill St), and First Mate James Carroll.
The “Fleetwing” was on route from Newport South Wales to Wexford when it ran into trouble near Milford Havan. Captain George Murphy tried to make for Fishguard Harbour but the schooner was blown north before running aground near Dinas, North Wales.
On board were:
Capt George Murphy – The Faythe
James Carroll, mate – Michael Street (died of exposure)
Patrick Whelan – Distillery Road
Matt O’Neill – Maudlintown
Thomas Murphy – High Street
Margaret Carroll, the widow of James Carroll, was later awarded £300
Source: “A maritime history of Co Wexford Vol II 1911 – 1960 by John Power