Two different men named Thomas Preston with two different wives seem to be combined together in one profile (Preston-255), He is shown as having died in 1674 in Calvert County, Maryland. And each of the two wives have sons named Thomas about the same age (apparently both died in 1710, but probably in different places). The proposed merge of those two sons should probably be rejected, but I don't know where to start to clean up this mess. Please help.