RootsChat.Com

For merchant navy, read also mercantile marine. This could be cargo vessels or passenger ships, run by private companies.

Please see another discussion on Penrhyn Marchog , as well as Brynmarchog and Porth-Y-Felin elsewhere on this site. I hope the link works.

http://www.rootschat.com/forum/index.php/topic,344803.0.html

Porth-Y-felin has a road 'Porth-y-Felin Road' (amazingly enough), but the area to the north west of Gwelfor Avenue is all called the area Porth-Y-Felin.
There was a mill there called Felin Dwr. Bryn Marchog is a small end of one of the side roads by 'The Victoria' pub, off from Porth-Y-Felin Road half way up a long hill. The whole area has some large 'well to do' houses, and smaller terraced houses, plus some new (1970's built, ugly bungalows).... 

Penrhyn Marchog - I believe to mean 'Soldier's Point' as this is referenced in the document extract below from Holyhead Forward Committee.

HOLYHEAD FORWARD BOARD
MINUTES OF MEETING HELD ON FRIDAY
13th JULY 2007 IN HOLYHEAD TOWN HALL

Penrhyn Marchog – ardal gyda pwysau datblygu, gyda un cynllun tai sylweddol eisioes wedi ei ganiatau. Hamdden dwr yn bwysig iawn i’r ardal, ac mae angen mynediad gwell at y dwr. Mae gan y Marina presennol ganiatad am 500 glanfa – awgrym yr ymgynghorwyr y gallai hwn godi i 1,500 . Cred RH mai y ffordd i gael y budd economaidd a cyhoeddus gorau yw cael un datblygiad cyfun, yn hytrach na cyfres o ddatblygiadau unigol fel y sefyllfa  hyd yma. Mae tir yn gyfyngedig a byddai modd cael canlyniad gwell trwy greu tir ychwanegol ar hyd ochr y dwr i ganiatau ymestyn y promenade at y Morglawdd. Byddai hyn hefyd yn helpu cadw uchder datblygiad i lawr.

Soldier’s Point – the area is subject to development pressures, with one significant housing scheme now approved. Marine recreation is seen as important and there needs to be better access to the water. The existing Marina has consent for 500 berths – consultants think this could grow to 1,500. RH believe that economic/ public gain will only be maximised by having one overall development, rather than a series of individual schemes as has been the situation to date. The extent of land is limited and a better overall result would be achieved by creating additional land along the seaward side, providing for an extension of the promenade up to the Breakwater. This should also help to limit the height of new development.

Mae angen integreiddio y Marina/ Penrhyn Marchog gyda canol y dref
There is a need to integrate the Marina / Soldier’s Point area with the town centre

Records of burials in Holyhead of the major churches. Not sure if they include all non-conformist/methodist chapels.

Anglesey County Record Office in Llangefni
Holyhead Urban District Council Records

Scope and content:  photocopies of burial registers, Maeshyfryd Cemetery, Holyhead Joint Burial Board/Committee, 1876-2001;

Main graveyards in Holyhead - St.Cybi's church (no longer used), St. Seiriol's Church, Maes Hyfryd, plus many other chapels have some old smaller plots. I would suggest Maes Hyfryd would be the best bet, it is the largest and in use daily. Not sure how this helps...