As this Jean-Baptiste Robillard married to Esther Robillard is a direct ancestor of my spouse, I did a lot of researche during the last two months on the subject. As J-B and Esther Doyer original mariage act/register is incompleted ( names of J-B parents missing )I had to go through a long process of elimination and making ties between the diferent Robillard members living in Montebello,Québec between 1815 and 1850. I came to the conclusion that Augustin Robillard maried to Marguerite Docque Laviolette in Rigaud, Québec, on Nov 12, 1812 are the parents of this Jean-Baptiste Robillard born in Rigaud on Feb 12,1817. Before these findings we had only 1815 as year of birth for this J-B which was a subtraction from the year he died (1882) minus his said age at his funerals (67 years old )which was wrong and was rather 65 when he died. We all know in those years that many mistakes were made on these church registers when family members were trying to remember and give to the priest the age of the deceased person. Often there was a 1 to 5 years gap off the true age. This wrong 1815 year of birth for J-B is what I believe has contributed to mix things at the most. On your about 260 pages Robillard Family listing that you sent me a copy about two years ago,you will find Augustin Robillard ( 5th generation )under # 84.