Irish

The speech of Macmorris in Henry V displays a few hints of an Irish pronunciation, with its replacement of /s/ by /sh/, changes in vowel quality, and the loss of a final consonant.

Irish pronunciation	English word	First use in Henry V
be	by	H5 III.ii.106
beseeched	besieged	H5 III.ii.115
Chrish	Christ	H5 III.ii.85
ish	is	H5 III.ii.85
sa’	save	H5 III.ii.109
’tish	’tis	H5 III.ii.85
trompet	trumpet	H5 III.ii.86