# arydyddhwn yagym hanescymru cymru welsh onthisday welshhistory wales

Llosgwyd rhan helaeth o blasdy Wynnstay, gan ddinistrio llyfrgell werthfawr o lawysgrifau Cymraeg 1858 https://t.co/eUI83Ft2Kh

4 6
2022-03-05

A large part of mansion was burnt, destroying the valuable library of manuscripts 1858 https://t.co/sJ9X3DvUlN

6 10
2022-03-05

Llosgwyd rhan helaeth o blasdy Wynnstay, gan ddinistrio llyfrgell werthfawr o lawysgrifau Cymraeg 1858 https://t.co/l9mQmBVfEW

5 5
2018-03-05

A large part of Wynnstay mansion was burnt, destroying the valuable library of Welsh manuscripts 1858 https://t.co/iv5ObElgrJ

6 7
2018-03-05