The Fine Arts Department has placed a plaque at Wat Worachetharam claiming that King Ekathotsarot built it in 1605 for his brother, King Naresuan, who had died earlier that year. Other resources claim that “Wat Worachet Thep Bamrung” was built by King Ekathotsarot to commemorate his brother King Naresuan (TAT 126-127). The problem is that the exact same information is attributed to both temples, and a reasonable argument could be made to support either one.
The Royal Chronicles refer to an enormous and widely attended funeral ceremony held in honor for King Naresuan in 1605 by his brother King Ekathotsarot. A temple was built on the site of his cremation, which had a great and holy stupa with a holy relic of the Buddha, dormitories, a wall-appropriate for the forest-dwelling sect of Buddhists, and a complete edition of the Tripitaka. Forest monks were invited to live inside this chief temple and supported with alms so that they would be supplied with food daily without fail. Crown officials were appointed to this temple and endowed with Royal wealth (Cushman 199-200).