The version played here is that of the "Northumbrian Minstrelsy" (Bruce & Stokoe, 1882), published with the following commentary : "The song [...] gives us a pretty image of family life. The little one wakes up a little too early, but the big lad and the big lass are reluctant to get up; hence the exclamation 'Thou's ower lang in thy bed' in the middle of the chorus".
It was a popular song in the north of England and in Scotland. The title appears in Henry Robson's list of Northumbrian dance tunes and songs in 1800 and enters John Bell's manuscript collection in 1812.
The tune was taken up in the 20th century by Benjamin Britten (1913-1976) in his "Eight Folk Song Arrangements". The melody is also the theme "Whispers of Oxenfurt" in the video game The Witcher 3: Wild Hunt.
The dulcimer (walnut/spruce) tuned 1-5-8 (C-G-C') is from the Stoney End brand:
https://www.stoneyend.com/