Combination of Mary and Lynn; star of the sea
Marelin is a modern compound name likely derived from the classic Mary and the suffix Lynn. It combines the Hebrew roots for 'bitter' or 'star of the sea' with the Welsh-derived 'lake' or 'waterfall'. This specific spelling is rare, often used as a phonetic variation of Marilyn.
Fewer than 5 girls were named Marelin in 2025.
US births per 5-year period, 1990–present (SSA data).