Where does “ぱ行” come from?

ぱ行 (Japanese) comes from Japanese 行, from Middle Chinese 行.

ぱ行 (Japanese): a row derived from the は行 of the 五十音図 (but not included in the table) by adding the diacritical mark ゜, consisting of the five kana ぱ/パ, ぴ/ピ, ぷ/プ, ぺ/ペ and ぽ/ポ

Definitions

  1. a row derived from the は行 of the 五十音図 (but not included in the table) by adding the diacritical mark ゜, consisting of the five kana ぱ/パ, ぴ/ピ, ぷ/プ, ぺ/ペ and ぽ/ポ

Ancestry of “ぱ行”, step by step

ぱ行 traces back through two separate lines of ancestry.

via Japanese

StepLanguageWordMeaning
1Japanesea line of text; a row of a matrix; Abbreviation...
2Middle Chinese

via Japanese

StepLanguageWordMeaning
1Japanese
Every word from Middle Chinese Every word from Japanese