[theducks]

I have a number of REGEX (Sigil saved searches below)

71\Name=Cleanup/Joins/Join to lower
71\Find="([[:alpha:],][\"\xe2\x80\x9d]*)</p>\\s*<p\\b[^>]*>([a-z\xe2\x80\x9c\"])"
71\Replace=\\1 \\2

72\Name=Cleanup/Joins/Join to upper
72\Find="([[:alpha:],]\xe2\x80\x9d*)</p>\\s*<p\\b[^>]*>([\"\xe2\x80\x9c]*[A-Z])"
72\Replace=\\1 \\2

74\Name=Cleanup/Joins/Initials
74\Find=([A-Z]\\.)</p>\\s*<p\\b[^>]*>([\"\xe2\x80\x9c]*[A-Z])
74\Replace=\\1 \\2

80\Name=Cleanup/Joins/Honorifics
80\Find="(Mr|Mrs|Ms|Dr|Prof)\\.</p>\\s+<p class=\"calibre\\d+\">([A-Z])"
80\Replace=\\1. \\2

Note that some need the class name corrected

I always do a Search, replace Next because there are always exceptions that I have not trapped (did not even try. It take a few minutes to run the series of S&R's)