I should have commented on the concept of potters field and also groupings or areas of baby graves These areas of the cemetery are different from areas of unconsecrated ground where the burials of non catholics or the fallen away or ex communicants occurred. A potters field is for the indigent, and baby groupings are as someone noted done when there may not be a family plot, or also in times of epidemics. These areas of the graveyard are consecrated and the persons buried there, in a catholic cemetery; are in good standing with the church. So I think we are mixing issues of wealth and faith. Indeed also the issue of transients, as many families up through the mid 19th century were forced to move frequently to remain employed. With infant and child mortality also being high areas of babies and children can reflect this issue as well