God will increase; pretty lake
A modern American compound name likely blending Jo, a diminutive of Joanna or Josephine, with the suffix -lynne. It carries the Hebrew roots of 'Yahweh increases' alongside the Welsh-derived 'lyn' meaning lake.
Fewer than 5 girls were named Jolynne in 2025.
US births per 5-year period, 1990–present (SSA data).