| Title | William and Margaret (t), or Ballad, A (at) |
| Short Title | SS, Harvard |
| Page | 1 |
| Genre | SS |
| Country | E |
| Instruments | VO,B+FL |
| Incipit | //61+7//634//36-7-//16//563//231//7- |
| Alternate Title | Ballad, A (at). William and Margaret (t), or |
| First Line | When all was wrapt in dark midnight (fl) |
| Verses | 17 |
| Stress Notes | 6631527 |
| Intervals | 3,-2,-2,-4,2,-2,-5,2,2,6,-2,2,-4,-2,2,-3,-2, |
| Key Signature | EUb,Bb,Ab |
| Time Signature | 3/4 |
| Do | Ab(ED |
| Number | B29.1312 |