I know that normally singular verbs are to be used with "each", but what if an individual and 'each' + a partitive involving a collective noun, such as "family", is spoken of, and "their" is used in referring to the individuals involved?
For example, is this correct:
Both Tinkerbella and each member of the McGorkle family has chosen to spend their life eating chocolate, and has been offically registered as a dyed-in-the-wool chocolate lover.
(has, their life, has, as a ... lover)
Or this:
Both Tinkerbella and each member of the McGorkle family have chosen to spend their lives eating chocolate, and have been offically registered as dyed-in-the-wool chocolate lovers.
(have, their lives, have, as ... lovers)
I could get rid of the "their" by replacing it with "his or her," perhaps (depending on current gender usage), but it seems/sounds awkward ("has chosen to spend his or her life").
If all the people being spoken of were male, it could be "his life" or "her life," but as there is a mixture of genders involved, "their life" is the only logical usage, right?