This is at Fishtrap Cemetery, 3469 Fish Trap Road, Dallas.
It reads, in oddly telegraphic style:
Burial Place of French, Belgian, and Swiss settlers brought here 1855-58 by Company for European American Colonization in Texas. This site was on road from La Reunion to willow fish traps set by the colonists in the Trinity. Early burials in this cemetery include aged French grenadier Pere Lagogue, also a young child of colony director F. Cantagrel. The company failed, but certain families remained, including the Loupots, Reverchons, and Santerres. They became business and cultural leaders in Dallas area, and used this cemetery as late as 1939 for family burials.