Only the 2 battalions of the 2nd Rgt of the "Garde de Paris", under Rabbe's command were at Friedland. According to the "Situation de la grande armée" dated 15th of may 1807, the 2nd Rgt of the "Garde de Paris" had 2 battalions, 27 officers and 445 guardmen.
Situation du 8e corps, le 15 mai 1807.
1re div. (Dupas), HQ in Dirschau.
1re brig. (Veaux)
4e léger (Bazancourt ?), 2 bat. (60/1714)
15e de Ligne (Raynaud), 2 bat. (62/1452)
2e brig. (Gency)
58e de ligne (Arnaud), 2 bat. (50/1722)
Garde de Paris (Rabbe), 2 bat. (27/445)
3e brig. (Grandjean)
Rgt de Würzburg, 2 bat. (40/1651)*
*The Rgt of Würzburg left the 8th corps on the 31 of may and went to Graudentz.
Sorry, but I have no detail for the 2nd division (Dombrowsky).
The good new for Greg is that we know now that the guard of Paris was already belonging to the 8th corps on the 15th of may.