Wedding Program Wording Deceased On My Wedding Program, How Do I Honor My Grandparent's 50th Anniversary (on Same Day)? Grandpa Recently Died.?

On my wedding program, how do I honor my grandparent's 50th anniversary (on same day)? Grandpa recently died.? - wedding program wording deceased

Your wedding day is the 50th Anniversary of my grandparents (grandmother lives, but my grandfather died less than a year). I want you in his honor in the program, but I'm not sure how the word of him? Since I am speaking from my late grandfather (he died last year) is not impolite to talk about our four grandparents died (more than a few years ago)?