Re: First House In Two Different Signs
You may use as a significator of the house;
1. The ruler of the sign on the cusp,
2. The almuten or the exaltation ruler of the sign on the cusp, and/or
3. Any planet in the house regardless of its sign
However, using the ruler of the intercepted sign is not traditional. I have never seen it in use and I have no idea how accurate the outcome will be, if that. However, astrology has developed through trial and error (among other things). You may try that way and see if it works. Let us know if you get anywhere with it. Who knows?
It's important to distinguish between means and ends.