Any idea if any grass is related to clover ??? And, as a mad horticultural scientist, how would you change any of the grasses to convert it into any of the clovers????

Welcome. No they are not related, grasses are monocots and clovers are dicots so not even close. I don't know enough about what can be done to answer the second question but I'm very doubtful it would be possible (or why you would want to do it).