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A female beggar was begging with five or six children trailing behind her.
Literal
Female [genitive-の] beggar [subject-が] 5-6 [genitive-の] children [object-を] trailing-[manner-ぞろぞろ] bringing was-begging.
ぞろぞろ is an onomatopoeia (擬態語) for a group trailing or shuffling along in a line — perfectly capturing the image of children following the beggar. 乞食 (こじき, 'beggar') is a word marked as sensitive in modern usage. 物乞い (ものごい, 'begging') is the act of asking for alms. つれて (連れて) means 'bringing along / accompanied by.' The scene reads as historical or travel-diary observation.