How to access controls on a master page dynamically from another user control, if the web application has nested master page

I have a user control, say control 1, that looks for control2, which is placed on the root master page : Site.Master And this is how I am getting Control2 from Control 1 now,
MasterPage showMaster = this.Page.Master.Master; MasterPage siteMaster = showMaster.Master; Control2= siteMaster.FindControl("Control2"); The above code works fine. But because our application uses nester master pages, I am running into a bit of situation here. How do I find control 2 dynamically regardless of where I put Control1 in which template? Becasue right now, depends on where I put Control1, and how nested is that template in relation to the Site.Master, I have to change how far up in the chain I get Site.Master in the Control 1 code. Any good ideas on how I can avoid doing that? Please advise.