Painted inscription transcription:
cara·Wallia·derelicta
ÐUGWYL·DAMASEUS
BAB·YR·UNVED·DYзAR
ÐEG·O·VIS·RAGFYR
DUW·GWENER+
AC·YNA·I·BWRIWYD
HOLL·GYMRY
Y'·R·LLAWR.VENIT·SUMMA·DIES
ET·INELUCTABILE·TEMPUS
DARDANIÆ.PENN·DRAGON
PENN·DREIC·OED·ARNAW
PENN·LLYWELYN·DEG
DYGYN·A·VRAW·BYT·BOT
PAWL·hAEARN·TRWYDAW.
ab·hieme·aӣ1282
NYT·OES·NA·XYNGOR·NA·XLO·NAC·EGOR.