Thank you to Nantonos for his response.

I have been doing a little extra research and I may have found an answer. Anyone with more knowledge, or better sources please tell me if any of the following statements are in error.

1. The temple that Nantonos refers to is the Temple of Jupiter Capitolinus, and it was built for Jupiter, Juno, and Minerva.

2. I have found several references to another temple on the Capitoline Hill that was dedicated to Jupiter, Quirinus, and Mars, I do not know its name.

3. Rene Seindal contends that Mars was replaced by Minerva. However, I think perhaps the two triads have been confused.

If anyone can provide further enlightenment please do.