Ramnath, is Lord Shiva and He came to be known thus because the idol was installed by Lord Rama . This temple of Gowda Saraswath community was in Loutolim first and was shifted to the present location post Portuguese colonisation . The temple also houses images of Lakshmi Narayan, Kamakshi, Santeri and Siddanath. This temple also has a multi layered deepasthambha and is maintained very well as other temples of Goa.
The temple celebrates the annual jatra festival, it is a procession carrying the idol in palanquin around the temple. Have a close look at the last picture. Is it not amazing? I saw this type of stone work in some of the temples I visited in Tamil Nadu.