Has anyone else had confusion with "Don" & "Dan" transcriptions thus leading to assumptions of Donald & Daniel?

While I appreciate and 'a' can be mistaken for an 'o', I have a couple of instances in the Qualtrough family in Lonan where a "Dan" in a probate document has been transcribed at 'Don". & vv, thus changing the perspective of the research into the family........ let alone the confusion caused.

Comments welcome.