The answer to you question is "them", because of the semicolon.
Consider the following
Mr.Ferrara will be interviewing two candidates for the position of sales director today,
both of whom are qualified for the job.
The two clauses are interdependent.
Mr.Ferrara will be interviewing two candidates for the position of sales director today;
both of them are qualified for the job.
The two clauses are strongly related but independent.
Mr.Ferrara will be interviewing two candidates for the position of sales director today.
Both of them are qualified for the job.
The two clauses are in different related sentences.
Mr.Ferrara will be interviewing two candidates for the position of sales director today because
both of them are qualified for the job.
The two clauses are related and linked by a linking word.
To help you fill in the blank, you might wanna try changing the sentence a bit
Mr.Ferrara will be interviewing two candidates for the position of sales director today;
____ are both qualified for the job.
Then you have to try and fill the blank with either they or who, which is slightly easier. The previous rules apply to those two clauses aswell.
Who is the "subjective" form (also called the nominative). Whom was originally the "objective" form (also called the accusative, but including what in other languages is called the dative as well). However, whom is increasingly replaced by who, especially in less-formal contexts.
The thing to understand is that while both the use of "whom" in the objective case and the avoidance of sentence-final prepositions are often seen in formal use, English isn't divided into two simple formal and informal registers.
Both "who[m]... with" and "with who" (which is unusual, but certainly permissible) could be considered as lowering the degree of formality , yet neither is as informal as it's possible to be. Both might be considered more formal than informal in some contexts.
Best Answer
Whether you use to depends on whether the verb requires a direct or indirect object.
For example, you would say:
The man is the direct object of the verb saw so you can't say to whom I saw.
But you can say:
Because what you gave was the letter, not the man. You gave the letter to the man. The man is the indirect object.
So the question is: does marry take a direct or indirect object. This gets a bit tricky because although you marry someone, you get married to someone.
In this instance, you have a choice. You can say either: