In answer to your question, my 9th great grandfather is Theunis Titus who married a Mary Barre who was said to be a descendent of John Berry and given the dates is likely his granddaughter. She was said to be from Mansfield Square (now called Rising Sun Square), NJ which is near Burlington. I find two Mary Barre or Berry's, one the daughter of a Samuel Berry who settled near Pompton, NJ and a James Barre whose will was made before a trip to Barbados in 1695 from which it appears he didn't return. I've requested the will and if I get it I'll pass it on to you.
I thought the same thing about the Quaker connection. But I read that the early Quakers in America did have slaves. It was only later in the 17th century that they started agitating against it.
I just read that John Berry donated land for a Dutch Reform Church I thin in Hackensack. I'll have to reconstruct that. But as I think about it, he may indeed have done it at the urging of one of his offspring who married Dutch. I found a list of early Bergen landowners and settler and it is mostly Dutch with lots of other groups thrown in.
https://sites.google.com/site/bergencogenweb/home/history/la...