From: Elementary 6.21
Character Names: Lord St. Simon, Hattie Doran
Reference: Not only the names of Holmes’ client and his missing American wife are from canon story “The Adventure Of The Noble Bachelor,” but the situation of her going missing at their wedding reception, and Holmes’ subsequent deduction that she wasn’t abducted but left voluntarily to be with another man, is also from the original.
(Side note: wasn’t Season 6’s finale just a corker? Love it…)