Thanks for the link Emyr, there is a wealth of information in the obituary that needs investigating further.
With regard to William Jones, his father was Thomas Jones Snr. who died in 1906 and his mother was Mary originally from Pwllheli. At the moment I have traced the family back to the 1861 Census when Mary and her baby son Thomas are living in Cornhill. By the 1881 Census the family had moved to 33 Snowdon Street.
I have tried to find out who Morris Jones is. There are two mentions of a Captain Morris Jones in Emrys Hughes Porthmadog Ships. P.36 one of three Master Mariner sons of Captain Hugh Parry, Borth-y-Gest, the leading ship broker at Cornhill. Two of the sons are Jones and one Richards peculiar that none are named Parry or even Hughes unless Hugh married two widows. There is also a Morris Jones who was owner of the "Sydney Jones" which was built in 1856 and lost off Helgoland in 1869. There is no guarantee that either are the Morris Jones you are interested in.
Welsh Mariners Index is more promising although Dr. Reg Davies seems confused as to whether he has two different men.
Surname Forename Place of Birth Year of Birth CC or Cs No. Capacities County of Birth
JONES Morris Penrhyn 1809 41899 M51 MER
C21325Catherine & Margaret1858-65 & 1868-70, voyages to the Baltic. Pensioned 15 Dec 1865, certificate received [but do these details apply to this man?]. [MI at Salem, Porthmadog, CAE: Capt Morris Jones, 47 High Street, Portmadoc, marwodd Ebrill 13, 1879 yn 70]. [Morris Jones, late of 47 High St., Porthmadog, CAE, MM, died 14 April 1879. Probate 10 July 1879 by Edward Jones, son, <£300, (NPC)].
I have downloaded his certificate if it is any use to you.
Glyn