Did you know that Family relationships weren’t recorded in the US Fed Census 1870 and beforehand? This means that when you merge 1870 census info from Ancestry.com into FTM you will need to merge each individual record for each person. Note: I highly recommend that you only download the media (census picture) for the head of household to save disk space. Then, if you want them altogether under the same Source Citation you need to merge the records. This can be quite time consuming. Wouldn’t it be lovely if there was an easy way to select several family members in FTM at the same time when merging this census info?
How To Merge 1870, 1860, 1850 Census (UPDATED)