I am being married in three weeks, and I as the groom feel that I should make reference to the recently deceased,
most recently my sister, who died aged 41 in February, she was meant to be at the wedding,
and also my fiancés mother and grandmother, who passed away within 4 weeks of each other last year,
I wouldn't start thanking everyone who has ever died in the family's, but those who you would have realistically have expected to be there, if they hadn't passed,
and of course, its just before the main speech and thanks you's, and not drawn out.