Perhaps you should try some spelling variations:
"alexander kennedy gilbert" » "alexander kenny gilbert", "alexander innes gilbert", "alexander kern gilbert"
"alexander kenneth gilbert" » "alexander kenny gilbert", "alexander keith gilbert", "alexander burnet gilbert", "alexander tennent gilbert", "alexander kenneth millett"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"alexander kennedy gilbert\") OR (\"alexander kenneth gilbert\"))".
• Removing quotes may allow a broader search: (( alexander kennedy gilbert ) OR ( alexander kenneth gilbert )).
• Adding a wildcard symbol may retrieve word variants: (("alexander kennedy gilbert") OR ("alexander kenneth gilbert"))*.