I just saw your message. I hope this is still of interest to you. Joseph and Huldah were my 3x great grandparents. I have the following, unverified, info:
Joseph b. 1795 England, d. 1851
Huldah b. 1797 Highgate, d. 1878 Highgate
I'm at a dead-end on both. Part of the problem is multiple spellings of Morits.
Please respond directly to
kperry7@optonline.net so I am more likely to see it.