There's no easy way around this - your data are a mess and need tidying up.
However, see the attached... in paste this in A60 as ARRAY FORMULA, and copy and down for a list of distinct owners from columns D, E, F & G
Alongside that there's a dropdown in C61 populated from the distinct owners list and which the formulas in columns D-G refer to. D61 has the following ARRAY FORMULA (other cells copied down and across)
Bottom line is: when you select an owner in the dropdown, the columns D-G list the addresses for that owner that are listed in the respective columns. It's not ideal because it doesn't take variant spellings of owners into account, but it may be a start.
HTH
Tim
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