FindMyPast Marriage (can be viewed online)
Date - 14 Nov 1876); Place - LLandyry Chapel of Ease
Richard Jones, age 22, Bachelor, Farm Servant, Residence - Moat, father Thomas Jones, Collier
Ann Erasmus, age 22, Spinster, Residence - Colliers, father David Erasmus, Farmer
The ages at marriage don't quite fit 1881 Census already posted
General Register Office Birth Registrations
Mary Jones, Dec 1877, Llanelly, 11a 783 - mother's maiden name Erasmus
Lettice Jones, Sep 1879, Llanelly, 11a 747 - mother's maiden name Erasmus
Catherine Jones, Mar 1882, Llanelly, 11a 774 - mother's maiden name Erasmus
Only Lettice on the 1881 Census.
On the 1911 Census Richard says "married 29 years" ie. c. 1882. But struggling to find a marriage for a Richard Jones and Mary ? around this time in that locale.
The death of an Anne Jones, age 24, Sep Qtr 1882, Llanelly, 11a 384 would fit the 1881 Census age of 23.
Things to think about