I know this post is old, & hopefully you have all of your questions answered...
But if not...
Theresa Bogaert, (1760's?) In Belgium married Pierre (Petrus, Pieter) Waeghe (1766)
son: leopoldus waeghe (1791)
Who married Rosa latomme
Son: Jan franciscus waeghe (1830)
Who married Theresa verheist
Son: Desideer Waeghe (1850)
Who married Maria Slembrouck
Son: franciscus lodovicus Alfons waeghe (1894)