Beata? brat? Well, you tell me.
word 'rascal' meaning a cloak of rough cloth
`rascal` in itself associate to Ratzi (German), Raci (Hungaria), Racowie (Polish). I eleborated here on this forum long time ago that Sarmatian designations on `Srb/Serb` goes hand in hand with `Ras/Rac` designations. So, you have `Sarmatians` (some foreign given form of local version of original Serbian name) and `Thracians` (Th-racians, also foreign given form of original Ras) which are two designations of same people. So, you had situation that medieval Serbia was known as `Serbia` and `Raska` or `Ras`.
In my opinion, if `rascal` means cloak in Irish must be that word was formed under the influence of specific people that used `cloak of rough cloth`.
Look, even Irish ethnic name have root `ras` in itself I-rish. See? After all, we know with certainty that Scots were Picts- Sarmatians and also Celts at the same time.
Also, Persia > Pe-rsia or Prusia > P-rusia.
Etruscans called themselves `Rasna`.
We are all Sarmatians/Thracians. I mean, in origin at least.