Emyr
Ignore the above baptism record it is not your Morris Jones. On checking Morris' Master Certificate I noted his date of birth was 15th December 1809 five months after the baptism!
However, I checked for Morris's and Margaret's marriage record and found it by pure luck since rubbish Find my Past have filed some of the Ynyscynhaiarn Parish records under Tudweiliog. Grrr!!!!
On 11 September 1837
Morris Jones aged 27 Bachelor Mariner resident Portmadoc father Henry Jones Labourer
Margaret Roberts aged 20 Spinster resident Portmadoc father Thomas Roberts Mariner
I am not sure how much info you have on Morris but here is the transcript of his gravestone:
Capel Salem MI 036
Er Serchus Gof Am Capt MORRIS JONES, 47 High St, Portmadoc, a fu farw Ebrill 12, 1879, yn 70 mlwydd oed. Hefyd MARGARET, ei anwyl briod a fu farw Tachwedd 26, 1877, yn 80 mlwydd oed. Hefyd JOHN, ei baban, a fu farw Ion 8, 1853, yn 2 fis oed. Hefyd MORRIS ROBERTS, 47 High St, a gollodd ei fywyd trwy longddrylliad y “Cath Griffiths” ar grigiau Veleccen, Scilly, Tachwedd 1875, yn 15 ml oed. Hefyd ei mab, Capt Robert Jones, a fu farw Tachwedd 12fed, 1901, yn 58 mlwydd oed. A,I merch Ellen Evans 40 Madoc St, ganwyd Mawrth 11, 1846, bu farw Gorphenaf 25ain, 1913. “Na wylwch o’m plegid”. Er Cof Am EDWARD JONES, ei mab, Ysgrifenydd y Steam Tug Company, bu farw Mawrth, 1886, yn 38 mlwydd oed. “Gostyngodd Efe fy nerth ar y ffordd, byrhaodd fy nyddiau”
(Pinnacl marmor coch)
Note: should Margaret's age be 60 not 80 as in the transcript. You might want to check at the cemetery.
I hope the info helps.
Glyn