Should an adult sibling be added to lease?

[Sandy Uhlmann]

I have a tenant who is moving from out of state and would like to rent my 3 BR single family home.  The prospective tenant is moving with her daughter, her significant other as well as with her brother who is just over 18.  I ran a screening on all of the adults including the brother.  The tenant  (at her brother's request) is wanting to leave the brother off of the lease.  What is the general consensus about this and the pros and cons?

Thanks,