SC - ALOSED BEEF

[Seton1355 at aol.com]

I am working on the recipe below.  Can someone please tell me how close I am 
to correct in the translation of it:
Thanks Phillipa

Take a layer of beef  (beef in strips?)
Cut it into (lechys) ??
Spread meat out on a board
Take mutton or beef  fat, herbs & onions and mix it together.
Spread mixture over top of the beef
Sprinkle on ground pepper and a little salt
Roll up the prepared beef
Put the rolled up beef strips in a (broch?) roasting pot???
Roast

Take lyr of beef; cut hem in lechys. Lay hem abrode on a bord. 
Take the fatte of motyn, or of beef, herbys & onions hewyn togefyr, 
& strew hit on the leches of beef with poudyr of pepyr & a lytyl salt, 
& roll hit up therynne. Put hem on a broch; rost hem."