(1) He is married to Maria van Golstein.
Their notice of marriage was on August 26, 1638 in Nijmegen.
Alard Frederick van der Meulen jm van Beuningen en Maria van Goldsteijn,jd van Ingen. Attestatie gegeven naar Ingen.They got married on September 7, 1638 at Beuningen.Source 1
Jr. Alard Frederick van der Meulen en joffrouw Martha van Goldsteen,binnen Nijmegen, . tot Inghen ghetrout
(2) He is married to Aleijda van Rouwenoort.
They got married on October 25, 1647 at Beuningen.Source 2
Jr. Alert Frederick van der Meulen, wed van S. Joff. Maria van Golsteijnen Joff. Aleijda van Rouwenoort, jd van Emmerick