How would Japanese clan leaders address one another aside from the title -dono?

Question

I'm writing a book where several Japanese clans interact with one another in both formal and non-formal settings. I was wondering a few things.

1. How did clan leaders greet one another? What would be the suffix attached to their name? Would they address them by family name or by a title?
2. Would there be a difference in respect when meeting/visiting on one of the clans' lands? Would the visitor have a different method of address then?

I know this is a bit of an odd thing to ask, but I want to ensure that my book is as accurate in all cultures involved. I want to minimize as many mistakes as possible to ensure that the audience will focus on the plot, not the mistakes.

Edit: The gist of my question is that, while I know that Japanese clan leaders were called ex. Asahi-dono as a title, how would someone of this same rank address them?

Answer 1

The last Sasaki head of clan and the last Rokkaku head of clan referred to eachother as -dono. Only one was of actual familial lineage biologically speaking. The other he called Haori-Dono which is technically a nickname and he called him Rokkaku-Dono or Osama. The Osama was an egregious term perhaps a joke on formalities. You'd have had to known their personalities. Old school tough guys who were grampa mild at the time. That was the late 90s. Hawaii.