2 adjectives to describe southernmost

GOTHLAND: 1 (2,595), the southernmost of the three old provinces of Sweden; chiefly mountainous, but with many fertile spaces; forest and lake scenery give a charm to the landscape; Gothenburg is the chief town.

The following want the comparative: front, frontmost; rear, rearmost; head, headmost; end, endmost; top, topmost; bottom, bottommost; mid or middle, midst, midmost or middlemost; north, northmost; south, southmost; east, eastmost; west, westmost; northern, northernmost; southern, southernmost; eastern, easternmost; western, westernmost.

2 adjectives to describe  southernmost