Thanks for sorting out my mistakes!

En þar sem þér heyrðuð gný mikinn þar mun yður sýndur heimsbrestur* og munuð
þér deyja allir brátt
(the) blood of many a man, both your's and others'. But there where you
heard a great din, there (the) 'crash of the world*' will
(be) shown to you and you will all die suddenly.

Síðan lét Brjánn konungur safna liði um allt ríki sitt og skyldi kominn
herinn allur til Dyflinnar í vikunni fyrir pálmdrottinsdag.
After-that King Brján assembled a force across all his kingdom and all the
army should come to Dublin in the week before Palm-Lord's-Day.

Grace
Fred and Grace Hatton
Hawley Pa