1- 8 1s+2s Petronella turn into middle and set, dance ½ reel of 4 up/down
9-16 2s+1s turn RH (4 bars) and dance ½ reel of 4 up/down to end in original places
17-24 1s+2s dance the Knot
25-32 1s dance Fig of 8 round 2s
33-40 2s dance Fig of 8 round 1s
41-48 2s+1s set and turn 2H once round opening into 4H round to left
(MINICRIB, Dance Crib compiled by Charles Upton, Deeside Caledonian Society, and his successors)
The village he came from is called Murringo, but its original name was Marengo, after a battle in Napoleonic times.
Maurice started a Class in the village and held an annual Dance for many years. Marengo Blue was first danced at one of these dances.
(Dance Information by Brian Charlton.)
Marengo is also a shade of gray (black with gray tinge) or blue colors. The color can be described as Hex triplet #4C5866, sRGBB (red-76, green-88, blue-102), or the color of a wet asphalt.