Wow, seems different to today's version, or perception of.
From that same thread/wiki:
Social Liberalism is more along the lines of what we call Liberalism today
Here is a comment from that link on Social Liberalism
"social liberalism (also called modern liberalism or welfare liberalism) holds that individuals have a right to be provided with certain benefits or services by others.[26] Unlike social liberals, classical liberals are "hostile to the welfare state."[9] They do not have an interest in material equality but only in "equality before the law."[27]
Classical liberalism is critical of social liberalism and takes offense at group rights being pursued at the expense of individual rights.[28]"
And more from the Social Liberalism wiki page:
Social liberalism is a political position that supports heavier regulation of the economy and more welfare than other types of liberalism, particularly classical liberalism. Moreover, social liberals consider the accumulation of wealth and power by a small group as a threat to liberty.[1][2]
Social liberalism replaced classical liberalism as the dominant ideology in much of the world, from the late nineteenth century onwards, although there was a resurgence of classical liberal ideology in the late 20th century.[3] Social liberal ideas and parties tend to be considered centrist[4][5] or centre-left[6][7][8].
Social liberalism is also called new liberalism[nb 1][9] (as it was originally termed), contemporary liberalism,[10] welfare liberalism,[11] high liberalism,[12] radical liberalism,[13] modern liberalism,[14] revisionist liberalism,[15] left-liberalism,[16] or simply liberalism.