I now have Conrad Dubois' estate papers from 1757-1762.I will be happy to copy them for anyone contacting me directly.
The papers reveal that Conrad's full name was Peter Conrad Dubois/Deboy/Depoy.(Various spellings of the last name in the documents.) He was a "sleighmaker"and had 4 children at the time of his death, Isaac, Agnes, Joseph and John.There was no 5th child named Conrad.
In May of 1762, Isaac and Agnes were age 21 or older, Joseph was 14-20 and John was under 14.