Thomas Charles Ollosson of the Mercantile Marine Reserve was a Steward on the HMS Laurentic when it sank in January 1917. The youngest of Samuel and Mary Ollosson’s six children, he was baptised on the 29th of October 1882 at the Llangefni Parish Church, Anglesey, North Wales.
Thomas Charles worked at the School Slate Works in Beaumaris and later as a coal miner before becoming a steward in the merchant navy. He was one of two Llanfairpwll men who died on the Laurentic and was 35 years old when his ship sank. His body was never recovered.
The name he is recorded under in the Commonwealth War Graves Registers, Plymouth Naval Memorial and on the WW1 memorial in his home town of Llanfairpwll is Charles Ollosson but this appears to be an error. He is remembered with the correct name on his parent’s gravestone at St Mary’s Churchyard Llanfairpwll.

Sources:-
Census Returns of England and Wales 1891, 1901 & 1911: The National Archives of the UK.
General Records Office UK
British Commonwealth War Graves Registers, 1914-1918. London, England: Commonwealth War Graves Commission.
Photograph of Thomas Charles Ollosson’s parents gravestone reproduced with the kind permission of Claire Nicholson. Original photograph from Martin and Claire Nicholson’s Cemetery Project. http://www.martin-nicholson.info/cemetery/cemeteryhighlights.htm
Roll of Honour Llanfairpwll: http://llanfairpwllgwyngyllgogerychwyrndrobwyll-llantysiliogogogoch.info/scripts/rollofhonour.php
War memorials register: http://www.iwm.org.uk/memorials/item/memorial/7002