Mustānum

Etymology
This toponym also appears comparably late (like and ) and it is difficult to determine in which language it originated [the Latvian and Livonian versions are semantically identical]. V. Kiparsky has suggested that its earlier name might have been the Baltic Sareyken mentioned in 16th century documents as a populated place between Ģipka and Kolka.

Morphologically from.

Proper noun

 * Mustānum – Mustānum – Melnsils
 * Melnsils – Melnsils – Melnsils
 * Mustānum – Mustānum – Melnsils
 * Melnsils – Melnsils – Melnsils

Usage notes
This term has open space locative forms: allative, adessive , ablative.