Complex sentence: Marco Polo named it Samara or Samarcha in the late 13th century, while the 14th century traveller Odoric of Pordenone used Sumoltra for Samudra, and subsequent European writers then used similar forms of the name for the island.
Split into simpler sentences: Marco Polo named it Samara or Samarcha in the late 13th century, while the 14th century traveller Odoric of Pordenone used Sumoltra for Samudra. Subsequent European writers then used similar forms of the name for the island.